Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Concord, CA ranks #6,759 worldwide for total patents filed all time, with 356 patents from 121 inventors. Leading employers of inventors based in Concord, CA include R.A. Investment Management S.A.R.L., Aastra Technologies Limited, Brand Shared Services.

Showing 1–50 of 121 inventors

Rank Inventor Primary Company Patents
1 Nghi Pham R.A. Investment Management S.A.R.L. 26
2 Francis Shen Aastra Technologies Limited 17
3 Allan James Becker Brand Shared Services 15
#4 Gavin R. Zealey Connaught Laboratories 14
#5 Paulo Francisco Mitel Networks 11
#5 Michael Angelo David Santorelli Geotab 11
#7 Samuel Chao Genenews 10
#8 Pavel Ryumin Dh Technologies Development Pte. 9
#9 Jeson Patel Google 8
#10 Michael Vogler Marketing Impact Limited 7
#10 Philip Joseph Wilcox University Health Network 7
#10 Charles Zuckerman Jempak 7
#13 Joel Pollock Marketing Impact Limited 6
#13 Edoardo Panziera Manchester Plastics 6
#13 Andrew Collard Sony 6
#16 Eric Desouza S. C. Johnson & Son 5
#17 Dragan Janus 4
#17 Sam Ajmera 4
#17 Nick Easthope 4
#17 Gavin Brin Oldcastle Buildingenvelope 4
#17 Harold Vahle Magna Powertrain 4
#17 Scott Kayes 4
#17 Jordan Milberg 4
#17 Matthew Milberg 4
#17 Doug Underwood 4
#17 Rick Dalley 4
#17 Doug Bannister 4
#28 Adam Schachter 3
#28 Nima Mohajerin Microsoft 3
#28 Sebastian VON DER ECKEN Nicoya Lifesciences 3
#28 Salah Sharieh Royal Bank Of Canada 3
#28 Valeriy Guyvoronskiy 3
#28 Daniel Weitzner Full-Swing Golf 3
#28 Mike Derek Simmons Landmark Graphics 3
#28 Tejus Ajmera 3
#28 Mark Van Ryswyck Ventra Group 3
#28 James D. DeLaurier Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Communications 3
#28 T. Kenneth Nayler 3
#28 Heather Gamble Perkinelmer Health Sciences Canada 3
#28 Gervase I. MacKay Unisearch Limited 3
#41 James Relunia Open Text 2
#41 Victor Jarinov RTX (Raytheon) 2
#41 Svetlana Krylova 2
#41 Bori Shushan University Of Utah 2
#41 Douglas S. Nayler 2
#41 Jake NEIMAN 2
#41 Richard Masaichi Kenno 2
#41 Kate Moffat Devine 2
#41 Anny Ang 2
#41 Frank E. Farkas 2