Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Oconomowoc, WI ranks #1,624 worldwide for total patents filed all time, with 2,051 patents from 386 inventors. Leading employers of inventors based in Oconomowoc, WI include IBM, Eaton, Woodway Usa. That works out to 112.7 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–50 of 386 inventors

Rank Inventor Primary Company Patents
1 Thomas F. Shirley, Jr. IBM 75
2 David A. Selby IBM 55
3 Dwight B. Stephenson Eaton 51
#4 Brian Thomas Branecky 46
#5 Douglas G. Bayerlein Woodway Usa 43
#5 Gerald C. Ruehlow Generac Power Systems 43
#7 Mark D. Randa Earth Tool Company 37
#8 Thomas P. Adams Cummins-Allison 36
#9 Terry L. Timmons Milwaukee Electric Tool 32
#10 Adam M. Kellogg Sportpet Designs 29
#11 Dieter F. Lay Redmond Products 27
#12 Kenneth Edward Hunt John Deere 26
#12 Mark Schaefer Isee Store Innovations 26
#14 Michael Naughton Milwaukee Electric Tool 25
#15 Earl T. Piber Eaton 24
#16 Joachim Banik Orbis 23
#17 David J. Guckenberger WARF 22
#18 Jeffrey A. Reichard American Superconductor 21
#19 Daniel E. Ertel Dorner Mfg. 20
#19 Darin L. Danelski Matthews International 20
#19 Brennan H. Fentzlaff Johnson Controls Tyco Ip Holdings Llp 20
#19 John Londt GE 20
#23 Steven J. Scott Rockwell Automation 19
#23 Min Ouyang GE 19
#25 John Andrew Guckenberger Luxtera 18
#25 Benjamin B. Fullerton, Jr. Kohler 18
#25 Andrew A. Knitt Caterpillar 18
#25 Donald J. Balazs Orbis 18
#25 Timothy E. Voiles GE 18
#25 Paavana Sainath GE 18
#31 Nicholas J. Jelich Aptargroup 17
#32 Mark J. Kannel Johnson Health Tech Co. 16
#33 Dean Wardle Husco Automotive Holdings 15
#34 Jeffrey T. Randall Seaquist Closures Foreign 14
#34 Michael Joseph Cook GE 14
#34 Melissa Freeman GE 14
#34 John Laborde Pipe Restoration Technologies 14
#38 Steven Edward Kempowski Tps Ip 13
#38 Jonathan Mark Butzine GE 13
#38 ROBERT WOODRUFF Lamplight Farms Incorporated 13
#38 Edward Henry Chao GE 13
#38 Steven Goodman Automatic Equipment Manufacturing 13
#38 Michael B. Fritz Thetford 13
#38 Kelly C. Kellogg Sportpet Designs 13
#45 Harvey W. Mikulecky Rte 12
#45 Charles J. Lob Harken, Incorporated 12
#45 Paul W. Eiche Milwaukee Electric Tool 12
#45 John Robert Lamberty GE 12
#45 Charles M. Rowland Celera 12
#45 Tod R. Tesch Generac Power Systems 12

Part of Wisconsin