{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Cities", "item": "https://www.patentleaderboard.com/cities"}, {"@type": "ListItem", "position": 3, "name": "Missouri", "item": "https://www.patentleaderboard.com/state/missouri"}, {"@type": "ListItem", "position": 4, "name": "Saint Charles, MO", "item": "https://www.patentleaderboard.com/city/saint-charles-mo"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Saint Charles, MO ranks #5,895 worldwide for total patents filed all time, with 428 patents from 90 inventors. Leading employers of inventors based in Saint Charles, MO include Changzhou University, Intel, The Boeing.

Showing 1–50 of 90 inventors

Rank Inventor Primary Company Patents
1 Yang Liu Changzhou University 33
2 Matthew R. Wicks Intel 29
3 Jeffrey M. Roach The Boeing 27
#4 James M. Ethington The Boeing 22
#4 James T. Perkins Bausch & Lomb Incorporated 22
#6 Ryan M. Bastien Nidec Motor 16
#7 Thomas W. Omohundro The Boeing 14
#8 Teddy M. Westphal Boise Cascade 13
#8 Robert Birch The University Of Queensland 13
#10 Angel Rodriguez Siemens Aktiengesellschaft 11
#10 Kevin Swearingen The Boeing 11
#12 Gregg Robert Bogucki The Boeing 10
#13 Jeffrey M. Uehling IBM 9
#13 Robert Walter Richardson Aclara Technologies 9
#15 Thomas Lenkman 8
#15 Michelle M. Sandau Applied Food Biotechnology 8
#17 William J. Watson British Petroleum 6
#17 Michael Proctor Mastercard 6
#17 Joseph A. Vehige Nidec Motor 6
#20 Andrew James Hubbard The Boeing 5
#20 Eric L. Werner The Boeing 5
#20 Craig S. Reichert Hussmann 5
#20 Jeffrey S. Sermersheim The Boeing 5
#20 Christopher M. Reeves Parker-Hannifin 5
#20 Eric E. Thomas The Boeing 5
#20 Jordan Kreitzman The Boeing 5
#20 Robert Daniel Kalinowski The Boeing 5
#28 Patrick Phillip Hunter Charter Communications Operating 4
#28 David Massey Basler Electric 4
#28 Lisa K. Sims AT&T 4
#31 Michael C. Cornish Wells Fargo Bank, N.A. 3
#31 Harlan H. Bloom Wells Fargo Bank, N.A. 3
#31 Daniel L. Brombolich Ugs 3
#31 Aarti Sharma Mastercard 3
#31 Joseph A. Vanartsdalen Reliable Biopharmaceutical 3
#31 Colleen A. Oberlee The Boeing 3
#31 Steven E. Franzen The Boeing 3
#31 Brian L. Davis Union Pacific Railroad 3
#31 Jeffrey L. McCraney Wells Fargo Bank, N.A. 3
#31 Stephen P. Hendrix Mastercard 3
#41 Linda S Baugh American Recreation Products 2
#41 Christopher Conrad Rehagen Nike 2
#41 Stephen Suganth Raja Mastercard 2
#41 Kevin K. Ohrr Reliable Biopharmaceutical 2
#41 Craig W. Scott The Boeing 2
#41 Jeremy Glenn Eagan The Boeing 2
#41 Randy Dean Baker The Boeing 2
#41 John Birkmann American Railcar Industries 2
#41 Eric Mathew Siboda AT&T 2
#41 Jeffrey Lynn Branson Mastercard 2

Part of Missouri