Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Willowdale, CA ranks #3,341 worldwide for total patents filed all time, with 898 patents from 211 inventors. Leading employers of inventors based in Willowdale, CA include Connaught Laboratories, Hsc Research And Development Limited Partnership, Xerox.

Showing 1–50 of 211 inventors

Rank Inventor Primary Company Patents
1 Michel H. Klein Connaught Laboratories 169
2 Yan-Ping Yang Connaught Laboratories 47
3 Johanna M. Rommens Hsc Research And Development Limited Partnership 39
#4 Rafik O. Loutfy Xerox 30
#5 Herbert Rees Husky Injection Molding Systems 28
#6 Branko Kovacevic AMD 22
#7 Tomas Valis Nortel Networks Limited 14
#8 George Volgyesi Unknown 13
#8 Sydney Sheung Chee Chung Olympus 13
#8 Donald T. Barber Datafile Limited 13
#11 Nigel Scotchmer Huys Industries Limited 12
#11 Michael Barnea Motorola 12
#11 John Zimmermann Paperboard Industries 12
#14 Joseph Primucci Mirolin Industries 11
#15 Gulam Premji Bertrand Faure 10
#15 Anthony R. Barringer Barringer Research Limited 10
#15 Walter H. Leistner Sigma Tool & Machine 10
#18 George C. Cooke Siemens Power Corporation 9
#18 Mark Francis Cypress Semiconductor 9
#18 Peter K. Boller Consumers Glass Company Limited 9
#18 Charles S. Argyle Long Manufacturing 9
#22 Charles D. Pole 8
#22 Maurice Weinberg RTX (Raytheon) 8
#22 Anthony M. Sun Connaught Laboratories 8
#22 Julie Benson Graco Children'S Products 8
#26 Takeshi Nehyo Rothmans, Benson & Hedges 7
#26 Richard C. Leveson Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Natual Resources 7
#26 Stephen H. Arshinoff Industrial Containers 7
#29 Heinz W. Braukmann Braukmann Armaturen Ag 6
#29 Chacko Thankachan Basf Se 6
#29 Frank C. Kolnick Motorola 6
#29 Radovan R. Maric Union Carbide Canada Limited 6
#33 Richard Sobiesiak IBM 5
#33 Bruce R. Intihar NVIDIA 5
#33 Mortimer Mamelak Orphan Medical 5
#33 Asim Kumar Ghosh Bank of America 5
#33 Stephen R. Cater Solarchem Enterprises 5
#33 Sonia E. Sanhueza Aventis Pasteur 5
#33 Anthony Chan Fuelmaker 5
#33 Yedy Israel Alcoholism And Drug Addiction Research Foundation 5
#33 Terry G. Schenck Warner-Lambert Company 5
#42 Anne Grosman Nortel Networks Limited 4
#42 Delio Sanz C-I-L 4
#42 John Dragasevich Gaf 4
#42 Rudolph A. Koehler Noma Canada 4
#42 Bernard D. Alm Fmc 4
#42 Andrew I. Kun Motorola 4
#42 Benjamin Chan American Airlines 4
#42 John Lefas Ingenia Polymers 4
#42 William C. McKee Diesel Equipment Limited 4