Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Corydon, IA ranks #30,645 worldwide for total patents filed all time, with 31 patents from 14 inventors. Leading employers of inventors based in Corydon, IA include The Shivvers Group, John Deere, IBM. That works out to 20.3 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–14 of 14 inventors

Rank Inventor Primary Company Patents
1 Steven D. Shivvers The Shivvers Group 6
2 Charles C. Shivvers The Shivvers Group 5
3 Xinzhan Z. Yang John Deere 4
#4 Edward A. Ryks The Shivvers Group 3
#4 Robert Daniel Engle IBM 3
#6 David Coontz 2
#7 Fred Parham Deflecta Shield 1
#7 Charles C. Shivers 1
#7 Erik Tamas Bodzsar HP 1
#7 Scott A. Shick The Shivvers Group 1
#7 Mickey Gragg Vermeer Manufacturing 1
#7 Jason D. Eads 1
#7 Garry J. Green 1
#7 Joaquin A. Tormo The Shivvers Group 1

Part of Iowa