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List of prolific inventors

Thomas Alva Edison was widely known as the America's most prolific inventor, even after his death in 1931.[1][2] He held a total of 1,093 U.S. patents (1,084 utility patents and 9 design patents).[3] In 2003, he was passed by Japanese inventor Shunpei Yamazaki.[4] On February 26, 2008, Yamazaki was passed by Australian inventor Kia Silverbrook.[5] Yamazaki passed Silverbrook in 2017.

Inventors with 200 or more worldwide utility patents are shown in the following table. While in many cases this is the number of utility patents granted by the United States Patent and Trademark Office, it may include utility patents granted by other countries, as noted by the source references for an inventor.

Inventor # of patents Country Active Main fields of invention Ref
Shunpei Yamazaki 4998  Japan 1976-2017 Thin film transistors, Liquid crystal displays, Solar cells, Flash memory, OLED [6][4][7][8][9][10][11][12][13][14][15][16]
Kia Silverbrook 4744  Australia 1994-2017 Printing, Digital paper, Internet, Electronics, CGI, Chemical, DNA, Lab-on-a-chip, MEMS, Mechanical, VLSI [17][18][4][5][7][8][9][10][11][12][13][14][15]
Lowell L. Wood, Jr. 1653  USA 1977-2017 Mosquito laser, Nuclear weapons [19][20][15]
Roderick A. Hyde 1499  USA 2001-2017 Various [21][22][15]
Jun Koyama 1289  Japan 1991-2017 Thin film transistors, Liquid crystal displays, OLED [23][24]
Gurtej Sandhu 1284  India 1991-2017 Thin film processes and materials, VLSI, Semiconductor device fabrication [25][26][7][8][9][16]
Paul Lapstun 1284  Australia 2000-2017 Printing, Digital paper, Internet, Electronics, CGI, VLSI [27][28][4][9][10][11][12][13][14]
Kangguo Cheng 1234  USA 2004-2017 Semiconductor device fabrication, Semiconductor memory, Semiconductor device [29][30]
Leonard Forbes 1098  Canada 1991-2017 Semiconductor Memories, CCDs, Thin film processes and materials, VLSI [31][32][4][8][9][10][12]
Thomas Edison 1084  USA 1847(b)-1931(d) Electric power, Lighting, Batteries, Phonograph, Cement, Telegraphy, Mining [2][3][4][5][33][34]
Clarence T. Tegreene 1027  USA 2000-2017 Various [35][36]
Donald E. Weder 1000  USA 1976-2017 Florist supplies [37][38][4][7][8][9][16]
Edward K. Y. Jung 996  USA 1996-2017 Various [39][40][15]
George Albert Lyon 993  Canada 1882(b)-1961(d) Automotive, Stainless steel products [4][41]
John F. O'Connor 949  USA 1864(b)-1938(d) Railway draft gearing [4][42]
Jay S. Walker 935  USA 1998-2017 Gaming machines [43][44][9][14]
Melvin De Groote 925  USA 1895(b)-1963(d) Chemical de-emulsifiers [2][4]
Shou-Shan Fan 902  China 2006-2017 Carbon nanotubes and applications of carbon nanotubes [45][46]
Francis H. Richards 894  USA 1850(b)-19??(d) Mechanical, automation [2][4]
Michael J. Sullivan 857  USA 1977-2017 Golf balls [47][48]
Rick Allen Hamilton II 846  USA 1999-2017 Various [49][50][15]
Ahmadreza Rofougaran 826  USA 2002-2017 Radio Frequency Integrated Circuits [51][52]
Warren Farnworth 772  USA 1990-2017 Semiconductor packaging [53][54][7][8][9]
Nathan Myhrvold 768  USA 1994-2017 Various [55][56]
Carleton Ellis 753  USA 1876(b)-1941(d) Margarine, Polyester, Anti-knock gasoline, Paint stripper [42][57]
William H. Eby 752  USA 1994-2017 Transgenic soybeans [58][59]
Mark Malamud 742  USA 1997-2017 Various [60][61][15]
Salman Akram 738  USA 1995-2017 Semiconductor packaging [62][63][7][8][9]
Jeyhan Karaoguz 735  USA 1996-2017 Wireless communications, Computer networks [64][65]
Jordin T. Kare 733  USA 1992-2017 Various [66][67]
Royce A. Levien 733  USA 1997-2017 Various [68][69][15]
Hideo Ando 729  Japan 1983-2017 Optical recording [70][71][14]
Robert W. Lord 729  USA 2003-2017 Various [72][73]
George Spector 722  USA 1976-1998 Gadgets, Toys [74][75][7][8]
Muriel Y. Ishikawa 707  USA 2002-2017 Various [76][77][78]
Austin L. Gurney 706  USA 1999-2017 Proteins, Antibodies [79][80][10][11]
Elihu Thomson 696  UK 1853(b)-1937(d) Electric power, Arc lamp, Electric motors, Lightning arrester, Arc welder [2][42]
Tetsujiro Kondo 691  Japan 1987-2017 Signal processing, Image processing [81][82]
William I. Wood 653  USA 1981-2016 Proteins, Antibodies [83][84][10][11]
Simon R. Walmsley 651  Australia 1995-2015 Printing, Electronics, VLSI, Cryptography [85][86][13][14]
Audrey D. Goddard 623  USA 1997-2017 Proteins, Antibodies [87][88][10][11]
Ali Khakifirooz 612  USA 2011-2017 Integrated Circuits, CMOS, Semiconductor device fabrication [89][90]
Jerome Lemelson 606  USA 1923(b)-1997(d) Toys, Industrial robots, Cordless telephones, Fax machines, Videocassette recorders [91][2][16][92]
Bruce B. Doris 596  USA 1995-2017 Integrated Circuits, CMOS, DRAM, Semiconductor device fabrication [93][94]
Béla Barényi 595  Austria 1907(b)-1997(d) Passive safety in automobiles [95][96]
Kie Y Ahn 595  USA 1976-2017 Thin film processes and materials, VLSI, Semiconductor device fabrication [97][98]
Tadahiro Ohmi 594  Japan 1981-2017 Thin film processes and materials, Semiconductor device fabrication [99][100]
Edward J. Nowak 585  USA 1979-2017 Semiconductor device fabrication, Semiconductor memory, Semiconductor device [101][102]
Paul J. Godowski 579  USA 1994-2014 Proteins, Antibodies [103][104][10][11]
Artur Fischer 570  Germany 1976-2002 Fasteners, Construction toys [105][106][107]
Eric C. Leuthardt 553  USA 2006-2017 Medical devices [108][109]
Louis L. Hsu 551  USA 1988-2016 Various [110][111]
Edwin H. Land 535  USA 1909(b)-1991(d) Instant photography, Polarizing film [112][113]
Henri Dreyfus 524   Switzerland 1882(b)-1944(d) Polymers, Synthetic fibers, Dyes [114][115]
John M. Santosuosso 524  USA 2001-2017 Various [116][117]
Clyde C. Farmer 513  USA 18??(b)-19??(d) Railway air brakes [118][42][119]
Heinz Focke 512  Germany 1976-2013 Cigarette packaging [120][121][7]
Mark I. Gardner 511  USA 1994-2010 Consumer electronics, Energy, Computers, Semiconductors, Physics [122][123][7][8]
Ravi K. Arimilli 507  India 1992-2017 Computer architecture, Semiconductor memory, Cache coherence, Symmetric multiprocessing [124][125]
Jeffrey P. Gambino 506  USA 1992-2017 MEMS, CMOS, BiCMOS, DRAM, Image Sensors, RF, Biosensors, 3D Integrated Circuits [126][127]
Louis H. Morin 503  USA 18??(b)-19??(d) Fasteners, Locks, Bobbins [128][119]
Tobin A. King 500  Australia 2000-2017 Printing, Digital paper, Mechanical [129][130]
Jack A. Mandelman 481  USA 1987-2014 Various [131][132]
James M. Hart 476  USA 1988-2017 Motor vehicle transmission [133][134]
Victoria Y. H. Wood 473  USA 2009-2017 Various [135][136]
Ronald S. Cok 457  USA 1986-2017 OLED displays; image processing [137][138]
Eberhard Ammermann 451  Germany 1979-2015 Fungicides [139][140][16]
Akira Nakazawa 450  Australia 1980-2017 Printing, Mechanical [141][142]
Thomas E. Murray 449  USA 1860(b)-1929(d) Electrical, HVAC, Wheels, Metal working, Light dimmer [143][144]
Robert S. Langer 445  USA 1983-2017 Biotechnology, Drug delivery, Tissue engineering [145][146]
Anthony K. Stamper 441  USA 1998-2017 MEMS, CMOS, BiCMOS, Silicon-germanium [147][148]
Hongyong Zhang 440  Japan 1993-2016 Thin film transistors, Liquid crystal displays [149][150]
Devendra K. Sadana 439  India 1983-2017 Solar cells, OLED, Integrated Circuits, CMOS, DRAM, LEDs [151][152]
Scott H. Wittkopp 432  USA 2001-2017 Motor vehicle transmission [153][154][14]
Clifford A. Pickover 419  USA 1992-2017 Various [155][156]
John Hays Hammond, Jr. 417  USA 1888(b)-1965(d) Radio control, Radio communications, Torpedoes [157][158]
Kai-Li Jiang 415  China 2006-2017 Carbon nanotubes and applications of carbon nanotubes [159][160]
Hossein Eslambolchi 412  USA 1993-2017 Telecommunications, Network intelligence, information Technology, communications technology [161][162]
Wilhelm Brandes 411  Germany 1976-2010 Fungicides [163][164]
Chih-Chao Yang 411  USA 2003-2017 Integrated Circuits [165][166]
Gregory J. Boss 408  USA 2008-2017 Various [167][168]
Cary L. Bates 404  USA 1994-2017 Programming tools, DBX, Memory debuggers [169][170][171]
Stanford R. Ovshinsky 400  USA 1922(b)-2012(d) Batteries, Solar cells, Liquid crystal displays, Hydrogen fuel cells, Computer data storage [172][173][174]
Josef Theurer 388  Austria 1976-2016 Railroad maintenance machines [175][176][16]
David V. Horak 384  USA 1992-2017 Various [177][178]
Xuemin (Sherman) Chen 382  USA 1997-2017 Computer networks, Integrated Circuits, Signal Processing [179][180][181][182][183]
George P. Liang 378  China 1983-2017 Gas turbine cooling [184][185]
Hans-Joachim Santel 377  Germany 1986-2013 Herbicides, Pesticides, Organic chemistry [186][187][16]
Vincent J. Zimmer 377  USA 1999-2017 Computer software and firmware [188][189]
Brian M. O'Connell 375  USA 2009-2017 Various [190][191]
Gisela Lorenz 374  Germany 1990-2015 Fungicides, Organic chemistry [192][193][16]
Wael W. Diab 371  USA 2003-2017 Computer networks [194][195]
Paul W. Dent 370  USA 1984-2017 Wireless communications [196][197]
Garry R. Jackson 367  Australia 2001-2016 Printing, Mechanical [198][199]
George Westinghouse 361  USA 1846(b)-1914(d) Electric power, Electricity meter, Railway air brake, Steam engines [200][201][202]
Robert R. Schmidt 350  Germany 1971-2005 Herbicides, Fungicides, Organic chemistry [203][204]
Mark W. Kroll 348  USA 1987-2017 Implantable medical devices [205][206][207]
Norman M. Berry 347  Australia 2006-2016 Printing, Mechanical [208][209]
Brent A. Anderson 347  USA 2001-2017 Semiconductor device fabrication, Semiconductor memory, Semiconductor device [210][211]
Jeffrey E. Stahmann 345  USA 1994-2017 Medical devices [212][213]
William Daniel Hillis 341  USA 1986-2017 Various [214][215]
Lisa Seacat DeLuca 340  USA 2009-2017 Various [216][217]
Carl J. Radens 332  USA 1994-2017 Integrated Circuits, CMOS, DRAM, Semiconductor device fabrication [218][219]
Ajith K. Kumar 316  India 1984-2017 Electric Power, Energy Management, Rail Transportation, Mining [220][221]
Steven L. Teig 313  USA 1995-2017 Integrated Circuits [222][223]
Liang Liu 312  China 2005-2017 Carbon nanotubes and applications of carbon nanotubes [224][225]
Victoria Smith 307  USA 2006-2017 Proteins, Antibodies [226][227]
Keith R. Walker 305  Saudi Arabia 2003-2017 Various [228][229]
Robert G. LeTourneau 299  USA 1888(b)-1969(d) Earthworks (engineering), Heavy Equipment, Industrial Machinery [230][231]
Hanson S. Gifford III 298  USA 1986-2017 Medical devices [232][233]
Victor S. Moore 292  USA 1982-2017 Various [234][235]
William R. Tonti 291  USA 1994-2016 Integrated Circuits, CMOS, DRAM, Semiconductor device fabrication [236][237]
Daniel J. Winarski 289  USA 1982-2017 Various [238][239]
Kulvir S. Bhogal 285  USA 2003-2017 Various [240][241]
Bengt Lindoff 279  Sweden 2000-2017 Wireless communications [242][243]
Dean L. Kamen 278  USA 1979-2017 Battery-powered electric vehicles, Medical devices, Stirling engines, Water purification, Wheelchairs [244][245]
Adam Heller 274  Romania 1968-2017 Solar cells, Glucose meters, Lasers [246][247][248]
Brent Keeth 273  USA 1994-2017 Integrated Circuits, CMOS, DRAM [249][250]
Lawrence A. Clevenger 271  USA 1996-2017 Semiconductor, Cognitive, Memory, Security, Analytics [251][252]
Hartley Owen 267  USA 1976-2010 Fluid catalytic cracking [253][254]
Michael A. Rothman 262  USA 2001-2017 Computer software and firmware [255][256]
Ruilong Xie 261  USA 2013-2017 Semiconductor device, CMOS, Semiconductor device fabrication [257][258]
Yoshihiro Kikuchi 256  Japan 1994-2017 Video processing [259][260]
Nobuyuki Taniguchi 245  Japan 1979-2015 Cameras [261][262]
Rajiv V. Joshi 242  USA 1986-2017 Electronics, analytics [263][264]
Takeshi Chujoh 240  Japan 1995-2017 Video processing [265][266]
Johnny M. Shieh 239  USA 1996-2017 Various [267][268]
Bran Ferren 238  USA 1986-2017 Computers, Consumer Electronics, Electro-Optical Systems, Medical, User Interfaces, Automotive, Vehicles & Transportation [269][270]
Philip S. Yu 236  USA 1982-2016 Various [271][272]
Pouya Hashemi 235  USA 2013-2017 Semiconductor, VLSI, CMOS logic and memory, cognitive [273][274]
Esmael H. Dinan 232  USA 2006-2017 Communication Networks [275][276]
Thomas J. Kennedy III 227  USA 1992-2017 Sporting Goods, Wind Turbines, Biotechnology [277][278]
Louis B. Rosenberg 223  USA 1995-2017 Augmented Reality, Virtual Reality, A.I., HCI [279][280]
Gerald F. McBrearty 223  USA 1997-2017 Various [281][282]
Dorin Comaniciu 222  USA 2003-2017 Machine Intelligence, Medical Imaging, Image-Guided Surgery, Computer Vision [283][284]
Paul Ian Mackey 220  Australia 2008-2016 Printing, Mechanical [285][286]
Imad Libbus 219  USA 2007-2017 Medical devices [287][288]
Gregory McAvoy 208  Australia 2003-2017 Printing, MEMS [289][290]
Hiroshi (You) Yoshioka 205  Japan 1997-2015 Cameras [291][292]
Patrick B. Usoro 205  USA 1999-2016 Transmissions, Hybrid Powertrains, Vehicle Thermal Management [293][294]
Sebastian T. Ventrone 205  USA 1989-2017 Semiconductor, Logic, Architecture [295][296]
Assaf Natanzon 204  Israel 2007-2017 Storage Systems, Data Protection [297][298]
Sarbajit K. Rakshit 203  India 2013-2017 Various [299][300]
Zvi Or-Bach 201  USA 1980-2017 Various [301][302]

This table was current as of November 21, 2017. The columns are defined as follows:

  • Inventor: The name of the inventor.
  • # of patents: This is the number of utility patents that have been issued. Only utility patents (or the international equivalent) are listed, as a utility patent is a patent for an invention. Not all patents are for inventions. Other patent types include: design patents for the ornamental design of an object; plant patents for plant varieties; and reissue patents, where a correction is made to an already granted patent. This list does not include patent applications (patents pending) as there is no guarantee that a patent application actually describes a novel invention until the patent is granted.
  • Country: This is the country of birth or upbringing of the inventor, where known. If unknown, this is the country of residence identified in the inventor's patent filings.
  • Active: The first and last year in which an inventor received a patent issuance, except when activity was prior to digital records, in which case year of birth (b) and death (d) may be substituted. If an inventor's first year is 1976 or a few years after, there may be activity prior to this; earlier dates are not present in the primary source, and would require a secondary source.
  • Main fields of invention: These are the main areas that the inventor is or was active in.

Contents

Threshold for inclusionEdit

As the average number of patents per inventor is around 3, some sources define prolific inventors as five times above the average (in terms of patents), leading to a threshold of 15 patents.[303] However, this table currently has an arbitrary cut-off limit for inclusion of 200 patents. This is purely for practical reasons – there are tens of thousands of inventors with more than 15 patents. The threshold of 200 patents means that some famous prolific inventors such as Nikola Tesla are not included in this list, as Tesla had 111 patents.[304][305]

Significance of inventionsEdit

This table is a sortable list of the most prolific inventors as measured by utility patents granted. It does not include other types of invention, such as inventions that were never applied for nor granted, for which there is no known source. Nor does the table attempt to measure the significance of an inventor and their inventions. The significance of inventions is often not apparent until many decades after the invention has been made. For recent inventors, it is not yet possible to determine their place in history.

The common symbol for inventiveness, the light bulb, is an example. The first incandescent light bulb was invented by British chemist Sir Humphry Davy in 1802. Many subsequent inventors improved Davy's invention prior to the successful commercialization of electric lighting by Thomas Edison in 1880, 78 years later. Electric lighting continued to be developed. Edison's carbon filament light bulb was made obsolete by the tungsten filament light bulb, invented in 1904 by Sándor Just and Franjo Hanaman. It is this that forms the popular conception of a light bulb, though there are other major forms of lighting. The principle of fluorescent lights was known since 1845, and various inventors, including Edison and Nikola Tesla worked on them without commercial success. Various improvements were made by many other inventors, until General Electric introduced "fluorescent lumiline lamps" commercially in 1938, first available to the public at the 1939 World's Fair. LED lamps also have a long history, with the first light-emitting diode (LED) invented in 1927 by Oleg Losev. LEDs were initially of low brightness, and have been used as indicator lamps and seven-segment displays since 1968. It wasn't until the development of high efficiency blue LEDs by Shuji Nakamura in the 1980s that white LEDs for lighting applications became practical. Although higher cost than incandescent light bulbs, LEDs have higher efficiency and longer life and may finally displace light bulbs in general lighting applications. In each case, more than 50 years passed between the initial invention and commercial success in general lighting applications.

Various published listsEdit

Rankings of prolific inventors have been published at various times. However, until the patent records were digitized, these lists were very tedious to prepare, as many thousands of patent records had to be checked manually. Even after digitization, it is still not a simple process. While the USPTO keeps statistics for annual rankings of inventions assigned to companies, it no longer publishes rankings of individual inventors. The last such list was published by the USPTO in 1998.[16] Also, patents predating 1976 have not yet been digitized in the USPTO records. This means that patents before 1976 will not be included in a USPTO search by inventor name, and the number of patents granted before 1976 must be added to current searches.

Popular Science (1936)Edit

In January 1936, Popular Science published a list of the "most prolific living inventors to be found in America today".[42]

Rank Inventor U.S. Patents
1 John F. O'Connor 949
2 Elihu Thomson 696
3 Carleton Ellis 648
4 Henry A. Wise Wood 434
5 John Hays Hammond Jr. 360
6 Clyde C. Farmer 344
7 Ethan I. Dodds 321
8 Edward Weston 309

Thomas Edison was not included in the list, as he died in 1931, five years earlier.

Time Magazine (2000)Edit

On December 4, 2000, Time Magazine published a list of the "top five inventors".[2]

Rank Inventor U.S. Patents
1 Thomas Edison 1,093
2 Melvin De Groote 925
3 Francis H. Richards 894
4 Elihu Thomson 696
5 Jerome Lemelson 554

This list only included U.S. inventors, so omitted Canadian inventor George Albert Lyon, with 993 U.S. patents at the time of publication, Japanese inventor Shunpei Yamazaki, with 745 U.S. patents, and Béla Barényi, with 595 German patents. Also omitted were John F. O'Connor with 949 U.S. patents, and Carleton Ellis, with 753 U.S. patents at the time of publication.

USA Today (2005)Edit

On December 13, 2005 USA Today published a list of "the top 10 living U.S. patent holders":[7]

Rank Inventor U.S. Patents
1 Shunpei Yamazaki 1,432
2 Donald Weder 1,322
3 Kia Silverbrook 810
4 George Spector 723
5 Gurtej Sandhu 576
6 Warren Farnworth 547
7 Salman Akram 527
8 Mark Gardner 512
9 Heinz Focke 508
10 Joseph Straeter 477

This research was performed by ipIQ of Chicago (now "The Patent Board"[306]) and 1790 Analytics[307] of New Jersey. This list only considered living inventors, and thus did not include such prolific inventors as Thomas Edison, Melvin De Groote, and Elihu Thomson. This list included design patents, which are not patents for inventions.

Condé Nast Portfolio (2007)Edit

On October 15, 2007 Condé Nast Portfolio Magazine published a list[8] of "the world's most prolific inventors alive":

Rank Inventor U.S. Patents
1 Shunpei Yamazaki 1,811
2 Kia Silverbrook 1,646
3 Donald Weder 1,350
4 George Spector 722
5 Gurtej Sandhu 674
6 Leonard Forbes 671
7 Warren Farnworth 635
8 Salman Akram 612
9 Mark Gardner 515
10 Joseph Straeter 485

This research was performed by The Patent Board,[306] a Chicago patent research and advisory firm. As with the USA Today list, the Portfolio list only considered living inventors, and thus did not include such prolific inventors as Thomas Edison. This list also included design patents, which are not patents for inventions.

Business Insider (2011)Edit

On 6 May 2011 Business Insider published an article titled: "The Ten Greatest Inventors In The Modern Era"[4] containing the following list:

Rank Inventor U.S. Patents
1 Kia Silverbrook 3,847
2 Shunpei Yamazaki 2,061
3 Thomas Edison 1,084
4 George Albert Lyon 993
5 Paul Lapstun 969
6 Donald Weder 951
7 John F. O'Connor 949
8 Leonard Forbes 948
9 Melvin De Groote 925
10 Francis H. Richards 894

This list included living and dead inventors, and only included granted utility patents (patents for inventions).

Strutpatent.com (2012)Edit

Strutpatent.com publishes a list of the "Top 10 Inventors" [9] listing inventors ranked by US patents (of all types) issued since 1990:

Rank Inventor U.S. Patents
1 Kia Silverbrook 4,279
2 Shunpei Yamazaki 1,664
3 Donald Weder 1,310
4 Paul Lapstun 1,098
5 Leonard Forbes 959
6 Gurtej Sandhu 728
7 Warren Farnworth 685
8 Salman Akram 653
9 Jay Walker 644
10 Chang-Hwan Hwang 634

This list included only patents granted since 1990, and includes design patents as well as utility patents.

Annual lists (2007–2012)Edit

Strutpatent.com publishes weekly, monthly, and annual lists of the top ten categories, inventors and assignees of US patents since 2007. These lists include all patent types, not just patents for inventions (utility patents).

The top ten inventors of US patents for 2007:[10]

Rank Inventor U.S. Patents
1 Kia Silverbrook 502
2 Audrey Goddard 232
3 William I. Wood 232
4 Austin L. Gurney 225
5 Chang-Hwan Hwang 203
6 Paul J. Godowski 193
7 Shunpei Yamazaki 139
8 Paul Lapstun 129
9 Leonard Forbes 120
10 Victoria Smith 112

The top ten inventors of US patents for 2008:[11]

Rank Inventor U.S. Patents
1 Kia Silverbrook 576
2 Chang-Hwan Hwang 198
3 Audrey Goddard 168
4 Austin L. Gurney 167
5 William I. Wood 166
6 Paul J. Godowski 153
7 Shunpei Yamazaki 143
8 Paul Lapstun 137
9 Chang-Soo Lee 129
10 Victoria Smith 122

The top ten inventors of US patents for 2009:[12]

Rank Inventor U.S. Patents
1 Kia Silverbrook 444
2 Shunpei Yamazaki 137
3 Paul Lapstun 113
4 Bartley K. Andre 92
5 Daniele De Iuliis 92
6 Jonathan Ive 92
7 Matthew Rohrbach 92
8 Richard P. Howarth 91
9 Duncan Robert Kerr 91
10 Leonard Forbes 91

The top ten inventors of US patents for 2010:[13]

Rank Inventor U.S. Patents
1 Kia Silverbrook 709
2 Paul Lapstun 191
3 Shunpei Yamazaki 162
4 Simon Walmsley 115
5 Bartley K. Andre 114
6 Matthew Rohrbach 109
7 Richard P. Howarth 108
8 Jonathan Ive 108
9 Duncan Robert Kerr 108
10 Daniel J. Coster 106

The top ten inventors of US patents for 2011:[14]

Rank Inventor U.S. Patents
1 Kia Silverbrook 754
2 Paul Lapstun 268
3 Shunpei Yamazaki 163
4 Hideo Ando 162
5 You Yoshioka 153
6 Scott H. Wittkopp 126
7 James M. Hart 125
8 Edward Jung 112
9 Simon Walmsley 112
10 Jay S. Walker 99

The top ten inventors of US patents for 2012:[15]

Rank Inventor U.S. Patents
1 Kia Silverbrook 220
2 Edward Jung 180
3 Shunpei Yamazaki 172
4 Lowell Wood 169
5 Roderick Hyde 140
6 Bin Li 124
7 Royce Levien 122
8 Mark Malamud 119
9 Shunpei Yamazaki 118
10 John Rinaldo 117

This table omitted Rick Allen Hamilton II. The USPTO database shows Hamilton was an inventor or co-inventor of 128 US patents granted in 2012,[308] which would place Hamilton at 6th rank for 2012.

Differences between listsEdit

Differences in patent numbers between the various lists are due to several reasons:

  • The lists were created on different dates. As many of the inventors in the lists are still active, the number of patents they hold are increasing.
  • While the U.S. Patent and Trademark Office (USPTO) is the primary source for U.S. patent information, only patents issued since 1976 can be electronically searched by the inventor's name at the USPTO website. For some of the listed inventors, such as Thomas Edison, all of their patents predate 1976, so other sources must be used.
  • Often entities list the worldwide total number of patents that they hold. This is not the same as the number of inventions, as a patent in one country may be for the same invention as a patent in another country. The set of patents covering a single invention in different countries is a Patent family.
  • The Time, USA Today and Portfolio lists show the total number of U.S. patents, including patents for designs (Design patents) as well as patents for inventions (Utility patents).
  • The annual lists from strutpatent.com list only those patents issued in the particular year to the inventor, not all of the inventor's patents.

See alsoEdit

ReferencesEdit

  1. ^ Thomas Alva Edison Biography at Rutgers University
  2. ^ a b c d e f g Man-Made Marvels Time Magazine, Dec 4, 2000
  3. ^ a b List of Edison patents
  4. ^ a b c d e f g h i j k l The Ten Greatest Inventors In The Modern Era Business Insider, 6 May 2011
  5. ^ a b c The True Inventor Basson-Booyens website
  6. ^ US Patents of Shunpei Yamazaki
  7. ^ a b c d e f g h i j You really can find identities of top patent holders USA Today, Dec 13, 2005
  8. ^ a b c d e f g h i j Masters of invention Portfolio, October 15, 2007
  9. ^ a b c d e f g h i j Strutpatent list of the top 10 inventors since 1990
  10. ^ a b c d e f g h i List of the top ten US patent grantees for 2007 StrutPatent.com website
  11. ^ a b c d e f g h List of the top ten US patent grantees for 2008 StrutPatent.com website
  12. ^ a b c d e List of the top ten US patent grantees for 2009 StrutPatent.com website
  13. ^ a b c d e List of the top ten US patent grantees for 2010 StrutPatent.com website
  14. ^ a b c d e f g h List of the top ten US patent grantees for 2011 StrutPatent.com website
  15. ^ a b c d e f g h i List of the top ten US patent grantees for 2012 StrutPatent.com website
  16. ^ a b c d e f g h i USPTO publication: Prolific Inventors Receiving Utility Patents 1988-1997
  17. ^ US Patents of Kia Silverbrook
  18. ^ Worldwide Patents of Kia Silverbrook
  19. ^ US Patents of Lowell L. Wood, Jr.
  20. ^ Worldwide Patents of Lowell L. Wood, Jr.
  21. ^ US Patents of Roderick A. Hyde
  22. ^ Worldwide Patents of Roderick A. Hyde
  23. ^ US Patents of Jun Koyama
  24. ^ Worldwide Patents of Jun Koyama
  25. ^ US Patents of Gurtej Sandhu
  26. ^ Worldwide Patents of Gurtej Sandhu
  27. ^ US Patents of Paul Lapstun
  28. ^ Worldwide Patents of Paul Lapstun
  29. ^ US Patents of Kangguo Cheng
  30. ^ Worldwide Patents of Kangguo Cheng
  31. ^ US Patents of Leonard Forbes
  32. ^ Worldwide Patents of Leonard Forbes
  33. ^ Edison's Foreign Patents
  34. ^ The Complete Thomas Alva Edison U.S. Patent Collection
  35. ^ US Patents of Clarence T. Tegreene
  36. ^ Worldwide Patents of Clarence T. Tegreene
  37. ^ US Patents of Donald E. Weder
  38. ^ Worldwide Patents of Donald E. Weder
  39. ^ US Patents of Edward K. Y. Jung
  40. ^ Worldwide Patents of Edward K. Y. Jung
  41. ^ Archived Boliven Patents by George Albert Lyon(s)
  42. ^ US Patents of Jay S. Walker
  43. ^ Worldwide Patents of Jay S. Walker
  44. ^ US Patents of Shou-Shan Fan
  45. ^ Worldwide Patents of Shou-Shan Fan
  46. ^ US Patents of Michael J. Sullivan
  47. ^ Worldwide Patents of Michael J. Sullivan
  48. ^ US Patents of Rick Allen Hamilton II
  49. ^ Worldwide Patents of Rick Allen Hamilton II
  50. ^ US Patents of Ahmadreza Rofougaran
  51. ^ Worldwide Patents of Ahmadreza Rofougaran
  52. ^ US Patents of Warren Farnworth
  53. ^ Worldwide Patents of Warren Farnworth
  54. ^ US Patents of Nathan Myhrvold
  55. ^ Worldwide Patents of Nathan Myhrvold
  56. ^ B. Zorina Khan, The Democratization of Invention: Patents and Copyrights in American Economic Development, 1790-1920 (Cambridge University Press, 2005) pp209-210
  57. ^ US Patents of William H. Eby
  58. ^ Worldwide Patents of William H. Eby
  59. ^ US Patents of Mark Malamud
  60. ^ Worldwide Patents of Mark Malamud
  61. ^ US Patents of Salman Akram
  62. ^ Worldwide Patents of Salman Akram
  63. ^ US Patents of Jeyhan Karaoguz
  64. ^ Worldwide Patents of Jeyhan Karaoguz
  65. ^ US Patents of Jordin T. Kare
  66. ^ Worldwide Patents of Jordin T. Kare
  67. ^ US Patents of Royce A. Levien
  68. ^ Worldwide Patents of Royce A. Levien
  69. ^ US Patents of Hideo Ando
  70. ^ Worldwide Patents of Hideo Ando
  71. ^ US Patents of Robert W. Lord
  72. ^ Worldwide Patents of Robert W. Lord
  73. ^ US Patents of George Spector
  74. ^ Worldwide Patents of George Spector
  75. ^ US Patents of Muriel Y. Ishikawa
  76. ^ Worldwide Patents of Muriel Y. Ishikawa
  77. ^ Bio of Muriel Y. Ishikawa
  78. ^ US Patents of Austin L. Gurney
  79. ^ Worldwide Patents of Austin L. Gurney
  80. ^ US Patents of Tetsujiro Kondo
  81. ^ Worldwide Patents of Tetsujiro Kondo
  82. ^ US Patents of William I. Wood
  83. ^ Worldwide Patents of William I. Wood
  84. ^ US Patents of Simon R. Walmsley
  85. ^ Worldwide Patents of Simon R. Walmsley
  86. ^ US Patents of Audrey D. Goddard
  87. ^ Worldwide Patents of Audrey D. Goddard
  88. ^ US Patents of Ali Khakifirooz
  89. ^ Worldwide Patents of Ali Khakifirooz
  90. ^ Worldwide Patents of Jerome Lemelson
  91. ^ The Lemelson Center for the Study of Invention & Innovation web site, Jerome Lemelson's Patents.
  92. ^ US Patents of Bruce B. Doris
  93. ^ Worldwide Patents of Bruce B. Doris
  94. ^ Worldwide Patents of Béla Barényi
  95. ^ German Patents of Béla Barényi
  96. ^ US Patents of Kie Y Ahn
  97. ^ Worldwide Patents of Kie Y Ahn
  98. ^ US Patents of Tadahiro Ohmi
  99. ^ Worldwide Patents of Tadahiro Ohmi
  100. ^ US Patents of Edward J. Nowak
  101. ^ Worldwide Patents of Edward J. Nowak
  102. ^ US Patents of Paul J. Godowski
  103. ^ Worldwide Patents of Paul J. Godowski
  104. ^ US Patents of Artur Fischer
  105. ^ Worldwide Patents of Artur Fischer
  106. ^ Reference to German patents of Artur Fischer
  107. ^ US Patents of Eric C. Leuthardt
  108. ^ Worldwide Patents of Eric C. Leuthardt
  109. ^ US Patents of Louis L. Hsu
  110. ^ Worldwide Patents of Louis L. Hsu
  111. ^ Worldwide Patents of Edwin H. Land
  112. ^ Victor K. McElheny, Insisting on the impossible: The Life of Edwin Land (Perseus Books, 1998)
  113. ^ Worldwide Patents of Henri Dreyfus
  114. ^ Camille and Henry Dreyfus Foundation
  115. ^ US Patents of John M. Santosuosso
  116. ^ Worldwide Patents of John M. Santosuosso
  117. ^ Worldwide Patents of Clyde C. Farmer
  118. ^ a b Archived Boliven.com website
  119. ^ US Patents of Heinz Focke
  120. ^ Worldwide Patents of Heinz Focke
  121. ^ US Patents of Mark I. Gardner
  122. ^ Worldwide Patents of Mark I. Gardner
  123. ^ US Patents of Ravi K. Arimilli
  124. ^ Worldwide Patents of Ravi K. Arimilli
  125. ^ US Patents of Jeffrey P. Gambino
  126. ^ Worldwide Patents of Jeffrey P. Gambino
  127. ^ Worldwide Patents of Louis H. Morin
  128. ^ US Patents of Tobin A. King
  129. ^ Worldwide Patents of Tobin A. King
  130. ^ US Patents of Jack A. Mandelman
  131. ^ Worldwide Patents of Jack A. Mandelman
  132. ^ US Patents of James M. Hart
  133. ^ Worldwide Patents of James M. Hart
  134. ^ US Patents of Victoria Y. H. Wood
  135. ^ Worldwide Patents of Victoria Y. H. Wood
  136. ^ US Patents of Ronald S. Cok
  137. ^ Worldwide Patents of Ronald S. Cok
  138. ^ US Patents of Eberhard Ammermann
  139. ^ Worldwide Patents of Eberhard Ammermann
  140. ^ US Patents of Akira Nakazawa
  141. ^ Worldwide Patents of Akira Nakazawa
  142. ^ Full patent listing for Thomas E. Murray
  143. ^ Thomas E. Murray web site
  144. ^ US Patents of Robert S. Langer
  145. ^ Worldwide Patents of Robert S. Langer
  146. ^ US Patents of Anthony K. Stamper
  147. ^ Worldwide Patents of Anthony K. Stamper
  148. ^ US Patents of Hongyong Zhang
  149. ^ Worldwide Patents of Hongyong Zhang
  150. ^ US Patents of Devendra K. Sadana
  151. ^ Worldwide Patents of Devendra K. Sadana
  152. ^ US Patents of Scott H. Wittkopp
  153. ^ Worldwide Patents of Scott H. Wittkopp
  154. ^ US Patents of Clifford A. Pickover
  155. ^ Worldwide Patents of Clifford A. Pickover
  156. ^ Worldwide Patents of John Hays Hammond, Jr.
  157. ^ The Infography of John Hays Hammond, Jr.
  158. ^ US Patents of Kai-Li Jiang
  159. ^ Worldwide Patents of Kai-Li Jiang
  160. ^ US Patents of Hossein Eslambolchi
  161. ^ Worldwide Patents of Hossein Eslambolchi
  162. ^ US Patents of Wilhelm Brandes
  163. ^ Worldwide Patents of Wilhelm Brandes
  164. ^ US Patents of Chih-Chao Yang
  165. ^ Worldwide Patents of Chih-Chao Yang
  166. ^ US Patents of Gregory J. Boss
  167. ^ Worldwide Patents of Gregory J. Boss
  168. ^ US Patents of Cary L. Bates
  169. ^ Worldwide Patents of Cary L. Bates
  170. ^ Bio of Cary L. Bates
  171. ^ US Patents of Stanford R. Ovshinsky
  172. ^ Worldwide Patents of Stanford R. Ovshinsky
  173. ^ US Patents of Stanford Ovshinsky
  174. ^ US Patents of Josef Theurer
  175. ^ Worldwide Patents of Josef Theurer
  176. ^ US Patents of David V. Horak
  177. ^ Worldwide Patents of David V. Horak
  178. ^ US Patents of Xuemin (Sherman) Chen
  179. ^ Worldwide Patents of Xuemin (Sherman) Chen
  180. ^ US Patents of Xuemin Chen a
  181. ^ US Patents of Xuemin Chen b
  182. ^ US Patents of Xuemin Chen c
  183. ^ US Patents of George P. Liang
  184. ^ Worldwide Patents of George P. Liang
  185. ^ US Patents of Hans-Joachim Santel
  186. ^ Worldwide Patents of Hans-Joachim Santel
  187. ^ US Patents of Vincent J. Zimmer
  188. ^ Worldwide Patents of Vincent J. Zimmer
  189. ^ US Patents of Brian M. O'Connell
  190. ^ Worldwide Patents of Brian M. O'Connell
  191. ^ US Patents of Gisela Lorenz
  192. ^ Worldwide Patents of Gisela Lorenz
  193. ^ US Patents of Wael W. Diab
  194. ^ Worldwide Patents of Wael W. Diab
  195. ^ US Patents of Paul W. Dent
  196. ^ Worldwide Patents of Paul W. Dent
  197. ^ US Patents of Garry R. Jackson
  198. ^ Worldwide Patents of Garry R. Jackson
  199. ^ George Westinghouse article at ideafinder.com
  200. ^ Hubert, P. G. (1894). Men of achievement. Inventors. New York: Charles Scribner's Sons. Page 296+
  201. ^ George Westinghouse article in Encyclopædia Britannica
  202. ^ US Patents of Robert R. Schmidt
  203. ^ Worldwide Patents of Robert R. Schmidt
  204. ^ US Patents of Mark W. Kroll
  205. ^ Worldwide Patents of Mark W. Kroll
  206. ^ Bio of Mark Kroll
  207. ^ US Patents of Norman M. Berry
  208. ^ Worldwide Patents of Norman M. Berry
  209. ^ US Patents of Brent A. Anderson
  210. ^ Worldwide Patents of Brent A. Anderson
  211. ^ US Patents of Jeffrey E. Stahmann
  212. ^ Worldwide Patents of Jeffrey E. Stahmann
  213. ^ US Patents of William Daniel Hillis
  214. ^ Worldwide Patents of William Daniel Hillis
  215. ^ US Patents of Lisa Seacat DeLuca
  216. ^ Worldwide Patents of Lisa Seacat DeLuca
  217. ^ US Patents of Carl J. Radens
  218. ^ Worldwide Patents of Carl J. Radens
  219. ^ US Patents of Ajith K. Kumar
  220. ^ Worldwide Patents of Ajith K. Kumar
  221. ^ US Patents of Steven L. Teig
  222. ^ Worldwide Patents of Steven L. Teig
  223. ^ US Patents of Liang Liu
  224. ^ Worldwide Patents of Liang Liu
  225. ^ US Patents of Victoria Smith
  226. ^ Worldwide Patents of Victoria Smith
  227. ^ US Patents of Keith R. Walker
  228. ^ Worldwide Patents of Keith R. Walker
  229. ^ Robert G. LeTourneau: Dean of Earthmoving
  230. ^ Texas Co-op Power: He Was a Mover and a Shaker
  231. ^ US Patents of Hanson S. Gifford III
  232. ^ Worldwide Patents of Hanson S. Gifford III
  233. ^ US Patents of Victor S. Moore
  234. ^ Worldwide Patents of Victor S. Moore
  235. ^ US Patents of William R. Tonti
  236. ^ Worldwide Patents of William R. Tonti
  237. ^ US Patents of Daniel J. Winarski
  238. ^ Worldwide Patents of Daniel J. Winarski
  239. ^ US Patents of Kulvir S. Bhogal
  240. ^ Worldwide Patents of Kulvir S. Bhogal
  241. ^ US Patents of Bengt Lindoff
  242. ^ Worldwide Patents of Bengt Lindoff
  243. ^ US Patents of Dean L. Kamen
  244. ^ Worldwide Patents of Dean L. Kamen
  245. ^ US Patents of Adam Heller
  246. ^ Worldwide Patents of Adam Heller
  247. ^ The 12 US Patents of Adam Heller prior to 1976
  248. ^ US Patents of Brent Keeth
  249. ^ Worldwide Patents of Brent Keeth
  250. ^ US Patents of Lawrence A. Clevenger
  251. ^ Worldwide Patents of Lawrence A. Clevenger
  252. ^ US Patents of Hartley Owen
  253. ^ Worldwide Patents of Hartley Owen
  254. ^ US Patents of Michael A. Rothman
  255. ^ Worldwide Patents of Michael A. Rothman
  256. ^ US Patents of Ruilong Xie
  257. ^ Worldwide Patents of Ruilong Xie
  258. ^ US Patents of Yoshihiro Kikuchi
  259. ^ Worldwide Patents of Yoshihiro Kikuchi
  260. ^ US Patents of Nobuyuki Taniguchi
  261. ^ Worldwide Patents of Nobuyuki Taniguchi
  262. ^ US Patents of Rajiv V. Joshi
  263. ^ Worldwide Patents of Rajiv V. Joshi
  264. ^ US Patents of Takeshi Chujoh
  265. ^ Worldwide Patents of Takeshi Chujoh
  266. ^ US Patents of Johnny M. Shieh
  267. ^ Worldwide Patents of Johnny M. Shieh
  268. ^ US Patents of Bran Ferren
  269. ^ Worldwide Patents of Bran Ferren
  270. ^ US Patents of Philip S. Yu
  271. ^ Worldwide Patents of Philip S. Yu
  272. ^ US Patents of Pouya Hashemi
  273. ^ Worldwide Patents of Pouya Hashemi
  274. ^ US Patents of Esmael H. Dinan
  275. ^ Worldwide Patents of Esmael H. Dinan
  276. ^ US Patents of Thomas J. Kennedy III
  277. ^ Worldwide Patents of Thomas J. Kennedy III
  278. ^ US Patents of Louis B. Rosenberg
  279. ^ Worldwide Patents of Louis B. Rosenberg
  280. ^ US Patents of Gerald F. McBrearty
  281. ^ Worldwide Patents of Gerald F. McBrearty
  282. ^ US Patents of Dorin Comaniciu
  283. ^ Worldwide Patents of Dorin Comaniciu
  284. ^ US Patents of Paul Ian Mackey
  285. ^ Worldwide Patents of Paul Ian Mackey
  286. ^ US Patents of Imad Libbus
  287. ^ Worldwide Patents of Imad Libbus
  288. ^ US Patents of Gregory McAvoy
  289. ^ Worldwide Patents of Gregory McAvoy
  290. ^ US Patents of Hiroshi (You) Yoshioka
  291. ^ Worldwide Patents of Hiroshi (You) Yoshioka
  292. ^ US Patents of Patrick B. Usoro
  293. ^ Worldwide Patents of Patrick B. Usoro
  294. ^ US Patents of Sebastian T. Ventrone
  295. ^ Worldwide Patents of Sebastian T. Ventrone
  296. ^ US Patents of Assaf Natanzon
  297. ^ Worldwide Patents of Assaf Natanzon
  298. ^ US Patents of Sarbajit K. Rakshit
  299. ^ Worldwide Patents of Sarbajit K. Rakshit
  300. ^ US Patents of Zvi Or-Bach
  301. ^
  302. ^ Prolific Inventors: Who are They and Where do They Locate? International Centre for Economic Research Working Paper No. 14/2010
  303. ^ List of Nikola Tesla patents
  304. ^ Jim Bieberich's Complete Nikola Tesla U.S. Patent Collection
  305. ^ a b The Patent Board website
  306. ^ 1790 Analytics website
  307. ^ USPTO Utility Patent Search for Rick Allen Hamilton II for 2012