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Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Markham, CA ranks #384 worldwide for total patents filed in 2019, with 390 patents from 199 inventors. Leading employers of inventors based in Markham, CA include IBM, Schweitzer Engineering Laboratories, AMD.

Showing 1–50 of 199 inventors

Rank Inventor Primary Company Patents
1 Steve McDuff IBM 12
2 Yanfeng Wang IBM 11
2 Bogdan Z. Kasztenny Schweitzer Engineering Laboratories 11
#4 Fei Guo AMD 10
#4 Gabor Sines AMD 10
#6 Murugathas Yuwaraj Synaptive Medical (Barbados) 7
#6 David Glen AMD 7
#6 Joseph Reiz Purdue Pharma 7
#6 Anthony Di Loreto 7
#10 Jason T S Lam IBM 5
#11 Kevin Ka Wai Ng Inc Square, Co. 4
#11 Herman S. Badwal IBM 4
#11 Arthur Carroll Chow The Toronto-Dominion Bank 4
#11 Michael D. Alarcon General Motors 4
#11 Timothy Jing Yin Szeto Nanoport Technology 4
#11 Stephen Sutherland Crosswing 4
#11 Gongxian Jeffrey Cheng AMD 4
#11 Arthur G. Ryman IBM 4
#11 Jarvis Chau General Motors 4
#11 Ephraim C. Yuen General Motors 4
#11 Wei Li Huawei 4
#22 Henry Lum Genesys Telecommunications Laboratories 3
#22 Gary Cheng Peraso Technologies 3
#22 Raymond Ng AT&T 3
#22 Zhihua Yang Murata Manufacturing Co. 3
#22 Guennadi Riguer AMD 3
#22 Ettore Tiotto IBM 3
#22 Andy Sung AMD 3
#22 Hong YAN City University Of Hong Kong 3
#22 Jimshed Mirza AMD 3
#22 Edward A. Harold AMD 3
#22 Xiaoming Zhou Shape Security 3
#22 Joanna W. Ng IBM 3
#22 Tom Longo Qualcomm 3
#22 Yuan-Chang Su Advanced Semiconductor Engineering 3
#22 Ronen Grosman IBM 3
#22 Jahangir Afsharian Murata Manufacturing Co. 3
#22 Ajith Shanmuganathan IBM 3
#22 Ao Wan IBM 3
#22 Denis Kouroussis Atom Power 3
#22 Alicia E. Chin IBM 3
#42 Chui Ha Cindy Wong Perkinelmer Health Sciences 2
#42 Arthur L. De Magalhaes IBM 2
#42 Jian Huang Ademco 2
#42 Jin Tang Huawei 2
#42 Eduardus Antonius Metz Qualcomm 2
#42 Stephen Leung 2266170 Ontario 2
#42 Alan S. Boxall IBM 2
#42 Peter Varga Dr. Ing. H.C. F. Porsche Ag 2
#42 Syed Gilani AMD 2