Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Chicago, IL ranks #82 worldwide for total patents filed all time, with 63,287 patents from 13,327 inventors. Leading employers of inventors based in Chicago, IL include Gte Automatic Electric Labs, Food Technology Products, Alberto Culver. That works out to 23.0 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 9,151–9,200 of 13,327 inventors

Rank Inventor Primary Company Patents
#7538 Shunjiro Ohba 1
#7538 Konstanty E. Krylow Gte Automatic Electric Labs 1
#7538 Harold D. Baum 1
#7538 Vincent E. Ignoffo 1
#7538 Stergios Lafsidis Food Technology Products 1
#7538 Angelina T. Balingit Alberto Culver 1
#7538 Norman S. Hewitt Continental Ag 1
#7538 Ronald M. Mikosinski 1
#7538 Thomas N. Hannigan Portec 1
#7538 Milton N. Zic 1
#7538 Veikko K. Peltola Burdick 1
#7538 Michael Sylogye 1
#7538 Theodore M. Ishihara Zenith Radio 1
#7538 Victor R. Schuster Zenith Radio 1
#7538 Thomas W. Kelly Atlantic Richfield 1
#7538 Janice L. Crandall 1
#7538 Louis D. Egenlauf 1
#7538 Warren A. Larrieu 1
#7538 Slawomir Z. Szczepanski 1
#7538 Zbigniew Litynski 1
#7538 Harry N. Novak 1
#7538 Elaine J. Kurland 1
#7538 Christen C. Rattenborg 1
#7538 Janusz D. Krysiak 1
#7538 Joe Much 1
#7538 Eugenia Kowalska 1
#7538 Rey C. Ramos Beatrice Foods 1
#7538 Robert L. Rees 1
#7538 Thomas Aitken Nalco Chemical 1
#7538 Arthur H. Clafford Amsted Industries Incorporated 1
#7538 Paul J. Wietrzyk 1
#7538 Vitaly N. Levit Templeton, Kenly & 1
#7538 Barry S. Brunsden US Dept of Energy 1
#7538 Hope H. Camp, Jr. 1
#7538 Perry J. Heard Illinois Tool Works 1
#7538 Edvardas Eidejus 1
#7538 Joseph C. Covington 1
#7538 Milton E. Taylor, III Unknown 1
#7538 Henry A. Mills 1
#7538 Walter J. Gerk The Drackett 1
#7538 Andrew Wyzenbeek Unknown 1
#7538 Robert A. Burch Norwood Marking & Equipment Co. 1
#7538 Nora Crane 1
#7538 Anthony Guanci 1
#7538 Alexander M. Hsia 1
#7538 Robert Cleveland 1
#7538 Victor Skuran Transco 1
#7538 H. James Seegers 1
#7538 Sally A. Roach 1
#7538 Adam R. Remke 1

Part of Illinois