Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Guelph, CA ranks #1,175 worldwide for total patents filed all time, with 2,854 patents from 736 inventors. Leading employers of inventors based in Guelph, CA include Monsanto Technology, Baylis Medical Company, Pioneer (Corteva).

Showing 1–50 of 736 inventors

Rank Inventor Primary Company Patents
1 Heinrich S. Wohleser Monsanto Technology 141
2 Gareth Davies Baylis Medical Company 73
3 Igor Falak Pioneer (Corteva) 65
#4 Paul Stone RTX (Raytheon) 62
#5 Sean Huberman Mapsted 60
#6 Man-Chung Tam Xerox 54
#7 Craig A. Dunk Research In Motion Limited 53
#8 Heinz W. Pauls University Health Network 49
#9 Michael K. Georges Xerox 44
#10 John H. Barber GE 34
#11 Alejandro Marangoni Solazyme 28
#12 William Ben Miners Intel 27
#13 Jim Estill Danby Products Limited 26
#14 Amar K. Mohanty Michigan State University 25
#15 David G. Charne Pioneer (Corteva) 24
#16 Robert Bell Ford 23
#16 William J. Malyk Enterpriseweb 23
#18 Bill Witherspoon Emseal Joint Systems 22
#18 Walter G. Brouwer Uniroyal Chemical Company 22
#20 Colin Campbell Stmicroelectronics (Research & Development) Limited 21
#20 Scott Gammon Blackberry Limited 21
#22 Alejandro Hernandez Monsanto Technology 20
#23 John H. Oskam Univation Technologies 19
#24 John J. Bladon Shipley Company, L.L.C. 17
#24 John Brennan Uop 17
#26 Manjusri Misra Michigan State University 16
#26 Scott Grasley HP 16
#26 Balwantrai Mistry Nortel Networks Limited 16
#26 Gregory Allan Thomas Hall Danby Products Limited 16
#30 Pratik SHAH Aegis Therapeutics 15
#30 Ferdinand Thoonen Pioneer (Corteva) 15
#32 Mario Artur Monteiro US Air Force 14
#32 James MCCRAE The Toronto-Dominion Bank 14
#32 Dennis O'Brien Danby Products Limited 14
#35 Tristan Zimmermann Excelsior 13
#35 Glen D. AITKEN Liftwerx Holdings 13
#35 Stephen H. Bell Gabriel Ride Control Products 13
#38 Andrew Michael Ellis Safran Landing Systems 12
#38 Ian Glenn Towe Glegg Water Conditioning, Incorporated 12
#38 Anupama Mishra Uniroyal Chemical Company 12
#38 Oliver Bradley Danby Products Limited 12
#38 Hoi K. Lai Uniroyal Chemical Company 12
#43 Alexander David Black Primal Fusion 11
#43 Peter Anthony Van Eerd Blackberry Limited 11
#43 Rupert Edward von Haken Spence Nova Chemicals (International) S.A. 11
#43 Zenon Lisieczko Monsanto Technology 11
#43 Ronald Dutton RTX (Raytheon) 11
#43 Jason Cornelius Wiseman Rockwell Automation 11
#43 David DeBruin Research In Motion Limited 11
#50 Alexander K. Koch Geotab 10