Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Marshalltown, IA ranks #2,166 worldwide for total patents filed all time, with 1,467 patents from 271 inventors. Leading employers of inventors based in Marshalltown, IA include Fisher Controls International, Fargo Electronics, Monsanto Technology. That works out to 53.2 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–50 of 271 inventors

Rank Inventor Primary Company Patents
1 Kenneth W. Junk Fisher Controls International 64
2 Michael W. McCarty Fisher Controls International 51
3 Michel K. Lovell Fisher Controls International 44
#4 Gary A. Lenz Fargo Electronics 38
#5 Stephen G. Seberger Fisher Controls International 35
#6 Nancy Sebern Monsanto Technology 25
#6 Thomas N. Gabriel Fisher Controls International 25
#8 Richard J. Vanderah Fisher Controls International 24
#9 Allen C. Fagerlund Fisher Controls International 23
#9 William E. Wears Fisher Controls International 23
#9 Trenton Frank Jackson Fisher Controls International 23
#12 Wade Jonathon Helfer Fisher Controls International 21
#12 Kurtis K. Jensen Fisher Controls International 21
#14 Daniel J. Eilers Fisher Controls International 20
#14 Ted Dennis Grabau Fisher Controls International 20
#16 Philip W. Eggleston Fisher Controls International 19
#16 Jimmie L. Snowbarger Fisher Controls International 19
#18 Daniel M. Adams Fisher Controls International 17
#18 Shannon Eugene Jelken Fisher Controls International 17
#18 George W. Gassman Fisher Controls International 17
#18 Bruce F. Grumstrup Fisher Controls International 17
#22 Lisa M. Miller 3M 16
#22 John Patrick Dilger Fisher Controls International 16
#24 Annette Lynn Latwesen Fisher Controls International 15
#24 Mitchell S. Panther Fisher Controls International 15
#24 Larry K. Brown Fisher Controls International 15
#27 Brandon Wayne Bell Fisher Controls International 14
#27 Paul T. Alman Fisher Controls International 14
#27 Jason Gene Olberding Fisher Controls International 14
#27 Brian J. Burlage Fisher Controls International 14
#31 Wilbur Dean Hutchens Fisher Controls International 13
#32 Bret Anthony Dahme Fisher Controls International 12
#33 Susan Allen University Of Iowa 11
#33 David J. Westwater Fisher Controls International 11
#33 David John Koester Fisher Controls International 11
#36 John S. Fuller Harman International Industries, Incorporated 10
#36 John M. Graether Transamerican Technologies International 10
#36 Donald R. Bush Fisher Controls International 10
#36 Randy Hall Fisher Controls International 10
#36 Michael Fontaine Fisher Controls International 10
#36 Clyde T. Eisenbeis Fisher Controls International 10
#36 John Patrick Ryan Workiva 10
#43 David L. Smid Fisher Controls International 9
#43 David Anthony Arnold Fisher Controls International 9
#43 Michael M. Anderson Fisher Controls International 9
#43 Jonathan W. Richardson Fisher Controls International 9
#43 Kimball R. Barron Fisher Controls International 9
#43 Perry K. Carter Fisher Controls International 9
#49 Justin Paul Goodwin Fisher Controls International 8
#49 Lawrence Martin Fisher Controls International 8

Part of Iowa