Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Cary, NC ranks #86 worldwide for total patents filed all time, with 29,308 patents from 3,681 inventors. Leading employers of inventors based in Cary, NC include IBM, Cisco, Lenovo (Singapore) Pte.. That works out to 167.7 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–50 of 3,681 inventors

Rank Inventor Primary Company Patents
1 Brian M. O'Connell IBM 496
2 Martin G. Keen IBM 444
3 Aaron K. Baughman IBM 384
#4 Carlos M. Pignataro Cisco 341
#5 John Carl Mese Lenovo (Singapore) Pte. 291
#6 Howard Locker Lenovo (United States) 289
#7 Peter D. Karabinis Atc Technologies 228
#8 James G. Whayne Ep Technologies 221
#9 Robert Paul Morris Sitting Man 202
#10 Trudy L. Hewitt IBM 198
#11 John Weldon Nicholson Lenovo (Singapore) Pte. 177
#12 Andrew R. Freed IBM 169
#13 Gerald George Pechanek Intel 161
#14 Jenny S. Li IBM 153
#15 Scott Wentao Li Lenovo (Singapore) Pte. 151
#16 Gregory E. Bottomley Ericsson 146
#17 Mona Singh Scenera Technologies 128
#18 Yan Xu Magic Leap 118
#19 Rui Zhang IBM 117
#20 Kenneth Warren Hang E.I. Du Pont De Nemours And 115
#21 John Toebes Cisco 114
#22 David W. Sherrer Nuvotronics 113
#23 Sei-Hyung Ryu Cree 107
#24 Qing Gong Byd Company Limited 100
#25 John H. Yoakum Avaya 98
#26 Hayden C. Cranford, Jr. IBM 96
#27 Scott Edwards Kelso Lenovo (Singapore) Pte. 95
#28 Richard Redpath IBM 94
#28 James Michael Ferris IBM 94
#30 Bernadette A. Carter IBM 93
#30 Mark E. Molander IBM 93
#32 Qing Li Hangzhou Ruisheng Software Co. 92
#33 Lisa M. Bradley IBM 91
#33 Franky So Motorola 91
#35 Nataraj Nagaratnam IBM 89
#36 Eskinder Hailu IBM 87
#37 Paul M. Enquist Ziptronix 86
#37 Randhir S. Malik IBM 86
#37 Richard Gerard Hofmann IBM 86
#40 Qingchun Zhang Cree 85
#40 Richard J. Schuman Hill-Rom Services 85
#42 David Wayne Hill IBM 84
#43 John Williams Palmour Cree 83
#44 Jianbang Zhang Lenovo (Singapore) Pte. 75
#45 Karl Molnar Ericsson 74
#46 Song Wang 72
#47 Kevin Haberern Cree 70
#47 David M. Ogle IBM 70
#47 Brett Olsson IBM 70
#50 Manmohan Singh Glaxosmithkline Biologicals Sa 69

Part of North Carolina