Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–4 of 4 inventors

Rank Inventor Primary Company Patents
1 John Dapron Sigma-Aldrich Co. 1
1 Richard Mehigh Sigma-Aldrich Co. 1
1 Bret S. Clark Nidec Motor 1
1 William Kappel Sigma-Aldrich Co. 1

Part of Missouri