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List of prolific inventors

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The 100 known most prolific inventors based on 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.

Prolific Inventors

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Inventor Pats Fams Fam % Pat Yrs Yrs Pat /Yr Inv /Pat Pat Residence Majority Assignment
Shunpei Yamazaki [1] 6388 2829 44.3% 1972—2024 52.4 122 3.6  Japan Semiconductor Energy Laboratory
Kia Silverbrook [2] 4747 1311 27.6% 1994—2014 20 237 1.6  Australia Silverbrook Research
Tao Luo [3] 3432 2882 84.0% 2006—2024 18.2 189 5.6  USA Qualcomm
Kangguo Cheng [4] 2740 1500 54.7% 2004—2024 19.8 138 3.9  USA IBM
Frederick E. Shelton IV [5] 2378 1126 47.4% 2005—2024 19.2 124 4.5  USA Ethicon
Junyi Li [6] 2196 1862 84.8% 2002—2024 21.8 101 5.2  USA Qualcomm
Peter Gaal [7] 2166 1664 76.8% 2002—2024 22 98 5.9  USA Qualcomm
Wanshi Chen [8] 2045 1580 77.3% 2009—2024 15.3 134 5.7  USA Qualcomm
Lowell L. Wood, Jr. [9] 1995 1325 66.4% 1971—2024 52.8 38 8.8  USA Intellectual Ventures
Roderick A. Hyde [10] 1890 1252 66.2% 2001—2024 23.2 81 8.7  USA Intellectual Ventures
Chen-Hua Yu [11] 1740 940 54.0% 1996—2024 28.2 62 4.9  Taiwan TSMC
Hanbyul Seo [12] 1643 1204 73.3% 2012—2024 12.3 134 3.8  South Korea LG
Xiaoxia Zhang [13] 1626 1409 86.7% 2009—2024 15.6 104 5.5  USA Qualcomm
Esmael H. Dinan [14] 1540 662 43.0% 2006—2024 18.2 85 3.6  USA Ofinno
Jun Koyama [15] 1492 620 41.6% 1991—2024 33.2 45 3.1  Japan Semiconductor Energy Laboratory
Gurtej Singh Sandhu [16] 1427 584 40.9% 1991—2024 33 43 2.5  USA Micron
Jing Sun [17] 1362 1154 84.7% 2012—2024 11.7 116 5.9  USA Qualcomm
Paul Lapstun [18] 1305 247 18.9% 2000—2024 23.8 55 2.5  Australia Silverbrook Research
Shou-Shan Fan [19] 1303 1089 83.6% 2006—2024 18.3 71 4.2  China Hon Hai
Sarbajit K. Rakshit [20] 1284 1068 83.2% 2013—2024 11.6 111 3.4  India IBM
Clarence T. Tegreene [21] 1247 903 72.4% 2000—2024 23.7 53 10.1  USA Intellectual Ventures
Alexander Reznicek [22] 1239 740 59.7% 2006—2024 18.4 67 3.9  USA IBM
Satoshi Seo [23] 1173 556 47.4% 2002—2024 21.7 54 4.1  Japan Semiconductor Energy Laboratory
Suckchel Yang [24] 1160 747 64.4% 2013—2024 11.1 105 4.7  South Korea LG
Kijun Kim [25] 1145 795 69.4% 2013—2024 10.7 107 4.6  South Korea LG
Shan Liu [26] 1143 768 67.2% 2013—2024 11 104 3.4  USA Tencent
Joonkui Ahn [27] 1115 726 65.1% 2013—2024 11.1 100 4.7  South Korea LG
Leonard Forbes [28] 1109 411 37.1% 1975—2019 43.3 26 2.6  USA Micron
Edward K. Y. Jung [29] 1109 794 71.6% 1996—2023 27.4 40 8.0  USA Intellectual Ventures
Thomas Edison [30] 1084 NA NA 1869—1933 63.9 17 1.0  USA Thomas Edison
Juan Montojo [31] 1082 884 81.7% 2004—2024 20.5 53 6.9  USA Qualcomm
Rick Allen Hamilton II [32] 1062 714 67.2% 1999—2024 25 42 4.2  USA IBM
Marta Karczewicz [33] 1056 871 82.5% 2000—2024 23.7 45 4.0  USA Qualcomm
Jason L. Harris [34] 1023 607 59.3% 2011—2024 13.6 75 6.0  USA Ethicon
Ruilong Xie [35] 1018 758 74.5% 2013—2024 11.6 88 4.2  USA IBM
Jason K. Resch [36] 1003 504 50.2% 2009—2024 15 67 4.2  USA IBM
Donald E. Weder [37] 1000 395 39.5% 1978—2015 37.1 27 1.1  USA Weder Family Trust
George Albert Lyon [38] 993 NA NA 1901—1965 64.5 15 1.0  Canada Lyon George Albert
Michael J. Sullivan [39] 993 534 53.8% 1989—2024 34.9 28 3.8  USA Acushnet Holdings
Jordin T. Kare [40] 989 640 64.7% 1992—2024 31.8 31 9.1  USA Intellectual Ventures
Tingfang Ji [41] 989 734 74.2% 2006—2024 18.1 55 6.9  USA Qualcomm
Takahiro Nishi [42] 982 352 35.8% 2001—2024 23 43 6.3  Japan Panasonic
Yunjung Yi [43] 980 694 70.8% 2015—2024 8.8 111 3.3  South Korea LG
Jay S. Walker [44] 979 422 43.1% 1998—2024 26.3 37 5.2  USA Walker Digital
John F. O'Connor [45] 949 NA NA 1901—1935 33.9 28 NA  USA William H. Miner
Ahmadreza Rofougaran [46] 949 460 48.5% 2002—2024 22.2 43 6.4  USA Broadcom
Melvin De Groote [47] 925 NA NA 1924—1966 41.8 22 NA  USA Petrolite
Seungmin Lee [48] 925 679 73.4% 2014—2024 9.9 93 3.5  South Korea LG
David R. Hall [49] 911 756 83.0% 1985—2024 39.1 23 3.8  USA Hall Labs
Nathan Myhrvold [50] 905 613 67.7% 1994—2024 29.7 30 11.1  USA Intellectual Ventures
Hao Xu [51] 901 643 71.4% 2005—2024 19.3 47 4.7  China Qualcomm
William H. Eby [52] 899 895 99.6% 1994—2024 30.2 30 1.2  USA Monsanto
Francis H. Richards [53] 894 NA NA 1899—1930 30.8 29 NA  USA Francis H. Richards
Mark Malamud [54] 885 690 78.0% 1997—2023 25.9 34 7.5  USA Intellectual Ventures
Hajime Kimura [55] 885 281 31.8% 2002—2024 21.8 41 2.6  Japan Semiconductor Energy Laboratory
Robert W. Lord [56] 866 682 78.8% 2003—2024 20.4 42 7.6  USA Intellectual Ventures
Hongyuan Zhang [57] 859 473 55.1% 2009—2024 15.3 56 3.9  USA Marvell
Royce A. Levien [58] 854 666 78.0% 1997—2023 25.9 33 6.8  USA Intellectual Ventures
Muriel Y. Ishikawa [59] 839 560 66.7% 2002—2024 22 38 11.1  USA Intellectual Ventures
Michael K. Gschwind [60] 836 442 52.9% 2001—2024 23.2 36 2.6  USA IBM
Clifford A. Pickover [61] 834 548 65.7% 1992—2024 32.3 26 3.9  USA IBM
Chih-Chao Yang [62] 834 519 62.2% 2003—2024 20.6 40 3.4  USA IBM
Lee D. Whetsel [63] 832 128 15.4% 1991—2024 33.3 25 1.1  USA Texas Instruments
Devendra K. Sadana [64] 811 457 56.4% 1983—2024 41.5 20 4.3  USA IBM
SungDuck Chun [65] 791 483 61.1% 2007—2024 16.7 47 3.8  South Korea LG
Salman Akram [66] 783 290 37.0% 1995—2024 29.1 27 2.9  USA Micron
Youngdae Lee [67] 780 615 78.8% 2014—2024 10.4 75 3.1  South Korea LG
Stuart C. Salter [68] 775 727 93.8% 2009—2024 14.7 53 4.8  USA Ford
Warren M. Farnworth [69] 774 289 37.3% 1990—2020 24.4 32 2.8  USA Micron
Hsien-Wei Chen [70] 771 381 49.4% 2005—2024 19.5 40 3.5  Taiwan TSMC
James A. Jorasch [71] 770 309 40.1% 1994—2024 29.8 26 3.9  USA Walker Digital
Yan Zhou [72] 769 686 89.2% 2012—2024 12 64 4.4  USA Qualcomm
Bruce B. Doris [73] 763 433 56.7% 1995—2023 28.7 27 4.2  USA IBM
Jeyhan Karaoguz [74] 757 371 49.0% 1996—2024 27.5 28 4.6  USA Broadcom
Justin T. Mason [75] 756 752 99.5% 2008—2024 15.8 48 1.0  USA MS Technologies
Carleton Ellis [76] 753 NA NA 1902—1946 43.1 17 NA  USA Ellis Foster Co
Ali Khakifirooz [77] 751 407 54.2% 2011—2024 12.9 58 4.2  USA IBM
Xue Dong [78] 745 728 97.7% 2010—2024 13.7 54 7.4  China BOE
John M. Santosuosso [79] 738 466 63.1% 2001—2024 22.5 33 3.9  USA IBM
Hideo Ando [80] 733 123 16.8% 1983—2020 36.7 20 3.1  Japan Toshiba
Satoshi Nagata [81] 733 696 95.0% 2011—2024 12.9 57 4.0  Japan NTT
George Spector [82] 723 723 100% 1974—1998 24.6 29 2.1  USA George Spector
Jean-Philippe M. Vasseur [83] 722 586 81.2% 2006—2024 18.3 39 2.6  France Cisco Systems
Frederick A. Ware [84] 719 227 31.6% 1981—2024 42.7 17 2.8  USA Rambus
Austin L. Gurney [85] 718 182 25.3% 1999—2021 21.6 33 2.9  USA Genentech
Shougo Sato [86] 718 280 39.0% 1992—2024 31.9 23 1.8  Japan Brother
Kyungmin Park [87] 713 387 54.3% 2014—2024 10.3 69 5.2  USA Ofinno
Lisa Seacat DeLuca [88] 708 513 72.5% 2009—2024 15.4 46 2.7  USA IBM
Gregory J. Boss [89] 708 485 68.5% 2008—2024 16.4 43 4.2  USA IBM
Tetsujiro Kondo [90] 700 528 75.4% 1987—2021 34 21 3.8  Japan Sony
Elihu Thomson [91] 696 NA NA 1899—1935 35.9 19 NA  USA GE
Chung-Shi Liu [92] 693 377 54.4% 2000—2024 24.6 28 6.1  Taiwan TSMC
Irwin Gerszberg [93] 682 312 45.7% 1994—2024 30.3 23 6.8  USA AT&T
Eric C. Leuthardt [94] 680 459 67.5% 2006—2024 17.8 38 9.1  USA Intellectual Ventures
Paul S. Henry [95] 657 301 45.8% 1978—2024 46.3 14 6.3  USA AT&T
Woosuk Ko [96] 657 257 39.1% 2015—2024 9.3 71 3.4  South Korea LG
Xiaochuan Chen [97] 656 639 97.4% 2014—2024 10.1 65 7.0  China BOE
Aleksandar Damnjanovic [98] 655 481 73.4% 2003—2024 21.1 31 4.4  USA Qualcomm
William I. Wood [99] 653 259 39.7% 1981—2013 32.2 20 5.2  USA Genentech
Simon R. Walmsley [100] 651 171 26.3% 1995—2012 17.2 38 3.2  Australia Silverbrook Research

This table is usually updated every Tuesday, and is current as of September 3, 2024.

The columns are defined as follows:

  • Inventor: The name of the inventor.
  • Pats: 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.
  • Fams: The number of patent families, which in USPTO data includes an original or continuation-in-part patent by itself or with one or more continuation or divisional patents based on the original or continuation-in-part patent. This is different than global patent families that represent a patent filed in more than one jurisdiction. "NA" signifies the inventor was active prior to digital records.
  • Fam %: The percentage of original and continuation-in-part patents that are in the inventor's patent portfolio [Fams column divided by Pats column, rounded to first decimal as a percentage]. "NA" signifies the inventor was active prior to digital records.
  • Pat Yrs: The first and last year in which an inventor received a patent issuance.
  • Yrs: The number of years from first issuance to most recent issuance, rounded to first decimal based on dates.
  • Pats /Yr: The average number of patents received per year [Pats column divided by Yrs column, rounded].
  • Inv / Pat: The average number of inventors listed on the inventor's most recent 50 patents as of September 7, 2021 or on the date the inventor was added to the table if later. "NA" signifies the inventor was active prior to digital records.
  • Pat Residence: The country of inventor's residence listed in their most recent patent issuance.
  • Majority Assignment: The entity that has the most patents assigned from an inventor's portfolio. This is current and not original assignment. It is usually, but not always an indication of which company the inventor worked at for the majority of their patent activity.

Significance of inventions

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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.

Various published lists

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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.[Info 1] 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.

A more extensive list of prolific inventors with additional information and ability to filter on country, gender, time period, patent type, and Nobel laureate title can be found at idiyas.com/top/inventors. There are some discrepancies with this article due to different inventor queries that attempt to account for data issues such as typos and multiple inventors with the same name.

See also

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References

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  1. ^ "USPTO publication: Prolific Inventors Receiving Utility Patents 1988–1997" (PDF). Archived (PDF) from the original on 2017-05-02. Retrieved 2011-07-12.

References of Inventors' Patents

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  1. ^ Shunpei Yamazaki
  2. ^ Kia Silverbrook
  3. ^ Tao Luo
  4. ^ Kangguo Cheng
  5. ^ Frederick E. Shelton IV
  6. ^ Junyi Li
  7. ^ Peter Gaal
  8. ^ Wanshi Chen
  9. ^ Lowell L. Wood, Jr.
  10. ^ Roderick A. Hyde
  11. ^ Chen-Hua Yu
  12. ^ Hanbyul Seo
  13. ^ Xiaoxia Zhang
  14. ^ Esmael H. Dinan
  15. ^ Jun Koyama
  16. ^ Gurtej Singh Sandhu
  17. ^ Jing Sun
  18. ^ Paul Lapstun
  19. ^ Shou-Shan Fan
  20. ^ Sarbajit K. Rakshit
  21. ^ Clarence T. Tegreene
  22. ^ Alexander Reznicek
  23. ^ Satoshi Seo
  24. ^ Suckchel Yang
  25. ^ Kijun Kim
  26. ^ Shan Liu
  27. ^ Joonkui Ahn
  28. ^ Leonard Forbes
  29. ^ Edward K. Y. Jung
  30. ^ Thomas Edison
  31. ^ Juan Montojo
  32. ^ Rick Allen Hamilton II
  33. ^ Marta Karczewicz
  34. ^ Jason L. Harris
  35. ^ Ruilong Xie
  36. ^ Jason K. Resch
  37. ^ Donald E. Weder
  38. ^ George Albert Lyon
  39. ^ Michael J. Sullivan
  40. ^ Jordin T. Kare
  41. ^ Tingfang Ji
  42. ^ Takahiro Nishi
  43. ^ Yunjung Yi
  44. ^ Jay S. Walker
  45. ^ John F. O'Connor
  46. ^ Ahmadreza Rofougaran
  47. ^ Melvin De Groote
  48. ^ Seungmin Lee
  49. ^ David R. Hall
  50. ^ Nathan Myhrvold
  51. ^ Hao Xu
  52. ^ William H. Eby
  53. ^ Francis H. Richards
  54. ^ Mark Malamud
  55. ^ Hajime Kimura
  56. ^ Robert W. Lord
  57. ^ Hongyuan Zhang
  58. ^ Royce A. Levien
  59. ^ Muriel Y. Ishikawa
  60. ^ Michael K. Gschwind
  61. ^ Clifford A. Pickover
  62. ^ Chih-Chao Yang
  63. ^ Lee D. Whetsel
  64. ^ Devendra K. Sadana
  65. ^ SungDuck Chun
  66. ^ Salman Akram
  67. ^ Youngdae Lee
  68. ^ Stuart C. Salter
  69. ^ Warren M. Farnworth
  70. ^ Hsien-Wei Chen
  71. ^ James A. Jorasch
  72. ^ Yan Zhou
  73. ^ Bruce B. Doris
  74. ^ Jeyhan Karaoguz
  75. ^ Justin T. Mason
  76. ^ Carleton Ellis
  77. ^ Ali Khakifirooz
  78. ^ Xue Dong
  79. ^ John M. Santosuosso
  80. ^ Hideo Ando
  81. ^ Satoshi Nagata
  82. ^ George Spector
  83. ^ Jean-Philippe M. Vasseur
  84. ^ Frederick A. Ware
  85. ^ Austin L. Gurney
  86. ^ Shougo Sato
  87. ^ Kyungmin Park
  88. ^ Lisa Seacat DeLuca
  89. ^ Gregory J. Boss
  90. ^ Tetsujiro Kondo
  91. ^ Elihu Thomson
  92. ^ Chung-Shi Liu
  93. ^ Irwin Gerszberg
  94. ^ Eric C. Leuthardt
  95. ^ Paul S. Henry
  96. ^ Woosuk Ko
  97. ^ Xiaochuan Chen
  98. ^ Aleksandar Damnjanovic
  99. ^ William I. Wood
  100. ^ Simon R. Walmsley
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