Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Fairfield, IL ranks #8,947 worldwide for total patents filed all time, with 235 patents from 58 inventors. Leading employers of inventors based in Fairfield, IL include Allied Precision Industries, Morton International, Motorola. That works out to 48.1 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–50 of 58 inventors

Rank Inventor Primary Company Patents
1 Thomas K. Reusche Allied Precision Industries 49
2 Jeno Muthiah Morton International 36
3 Paul D. Steinberg Motorola 13
#4 Kathleen Foreman Tools Aviation, Llc. 10
#5 Claude Frank Phillips, Jr. Arizona Chemical Company 8
#6 Mark Phipps Robert Bosch Gmbh 7
#6 Fredrick R. Gilbert Jack Walters & Sons 7
#8 Larry Collins Rolls-Royce Plc 5
#8 Jule G. Lambeck ExxonMobil 5
#8 Clarence R. Tate Thalatta 5
#11 Guy Bevente AT&T 4
#11 Rodney Boutwell 4
#11 Jeffrey M. Petsinger Motorola 4
#11 R. David Morris Airtex Products, Lp 4
#11 Thomas J. Pettey 4
#11 Ralph E. Ulm 4
#11 Kelly Smith Institute For Systems Biology 4
#18 Charles H. Sharpless AT&T 3
#18 Bruce Stephen University Of Strathclyde 3
#18 Gerald J. Marchese 3
#18 Keith Petri Zeta Global 3
#18 Meena G. Chabria Press-A-Lite 3
#23 Nicholas Coduto AT&T 2
#23 Eric Stewart Rockwell Collins 2
#23 Edward D. Hurst Eaton 2
#23 Robert L. Spurgeon 2
#23 Francis J. Muno Unknown 2
#23 Laura R PSZCZOLKOWSKI AT&T 2
#23 Beverly A. Miller 2
#23 Fred F. Price, Sr. 2
#23 Ralph C. Daehn Unknown 2
#23 Greg Hightower 2
#23 Robert T. Clemmons 2
#34 John Trankina 1
#34 Larry T. Bunting 1
#34 Donald E Grimes, Jr. 1
#34 Steven M. Donath Southwire Company 1
#34 Stefano Bimbi Unknown 1
#34 Julie Ann Petsinger 1
#34 Melissa F. Garside 1
#34 Gerald Calabrese Restaurant Technology 1
#34 Nicholas J. Starai 1
#34 R. David Price Case Gmbh 1
#34 Edwin J. Hull, III 1
#34 Donald Legler Sun Electric 1
#34 Anthony C. Aiello 1
#34 Roy Xanders 1
#34 Kurt Kenner 1
#34 Douglas A. Rio 1
#34 R. Nolan Day Illinois Tool Works 1

Part of Illinois