Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Canton, SD ranks #22,971 worldwide for total patents filed all time, with 52 patents from 19 inventors. Leading employers of inventors based in Canton, SD include Copper John, Amesbury Group, Avery Outdoors. That works out to 17.0 patents per 1,000 residents, a common benchmark for comparing regional innovation intensity.

Showing 1–19 of 19 inventors

Rank Inventor Primary Company Patents
1 Eric C. Springer Copper John 11
2 Murray A. Rowe 8
3 Ewald R. Ulmer 6
#4 Gary J. Marshik Amesbury Group 5
#5 Eric Larsgaard Avery Outdoors 3
#5 Robert Sandnes Pearson Incorporated 3
#7 Norman J. Kaarre Mccord Heat Transfer 2
#7 Kevin Kent Stahlecker Behr Heat Transfer Systems 2
#7 Dale Lewis Kroger Behr Heat Transfer Systems 2
#10 Thomas M. Lease Mccord Heat Transfer 1
#10 Jerry Chaon 1
#10 Peter Bendorf Unknown 1
#10 Robert George Sandness 1
#10 Stanley Olson 1
#10 John Robert Lease 1
#10 Dean L. Libra 1
#10 Darrell R. Kaarup 1
#10 Kevin Duane Jensen 1
#10 Tom Schorn 1

Part of South Dakota