Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Peterborough, CA ranks #4,330 worldwide for total patents filed all time, with 644 patents from 230 inventors. Leading employers of inventors based in Peterborough, CA include J.E. Thomas Specialties Limited, Trent University, Hand Held Products.

Showing 1–50 of 230 inventors

Rank Inventor Primary Company Patents
1 Robert L. Romerein J.E. Thomas Specialties Limited 26
2 Suresh Narine Trent University 20
3 Edward Douglas Hatton Hand Held Products 17
#4 Stephen Charles Mackie Nemaska Lithium 15
#5 Laziz Bouzidi Trent University 14
#5 Martin Johansson Astrazeneca Ab 14
#7 Srdjan Bulatovic Falconbridge Limited 13
#8 Archibald W. Smith Storage Technology 11
#8 Robert Henry Rehder GE 11
#8 Richard M. Keefer Alcan International Limited 11
#11 Stephen Ward Oracle 10
#11 George Quinton Lyon Siemens Milltronics Process Instruments 10
#11 Ali Mahdevari Trent University 10
#14 Stephen James Wright 9
#14 Bogdan Cherek Milltronics 9
#16 Thomas G. Onderwater Bwxt Isotope Technology Group 8
#16 James H. Ferguson GE 8
#16 Kenneth R. Fox Canadian General Electric Company Limited 8
#19 Jean-René Larocque Siemens Milltronics Process Instruments 7
#19 Martin Stephenson The Boeing 7
#19 James H. Dymond GE 7
#22 Eric Whiteley Maghemite 6
#22 Quinton Lyon Siemens Milltronics Process Instruments 6
#22 Leonard Kelly Unknown 6
#25 Hasham BURHANI Royal Bank Of Canada 5
#25 Stanley Panton Milltronics 5
#25 Peter Ernst Eaton Fluid Power Gmbh 5
#25 Terry Bellew Hunter Rovema Packaging Machines, Lp 5
#25 Peter Paul Heysel Comcast 5
#25 Philip Chadwick Canadian General Electric Company Limited 5
#25 Peter McKenna Canadian General Electric Company Limited 5
#25 Walter A. Hill Canadian General Electric Company Limited 5
#25 Duncan T. Bath Canadian General Electric Company Limited 5
#25 Frank Londry 5
#25 Ronald C. Trussler Canadian General Electric Company Limited 5
#36 Bruce Darling Trent University 4
#36 Michael Walter White GE 4
#36 Serge Scuccato GE 4
#36 Raymond K. J. Ong GE 4
#36 Melvin George Johnson GE 4
#36 Graham Knowles Arxx Building Products 4
#36 Prasanth Kumar Sasidharan Pillai Trent University 4
#36 Nigel Ashley Preston Siemens Milltronics Process Instruments 4
#36 Mark John DeBlock GE 4
#36 Jonathan R. Bennett Hartford Fire Insurance 4
#36 Antero Samuel Laitila Mtr Holdings 4
#36 Toni Laitila Mtr Holdings 4
#36 Son C. Nguyen Harvard University 4
#36 Andrew James Vreugdenhil Trent University 4
#50 G. Carl Schweer 3