Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–4 of 4 inventors

Rank Inventor Primary Company Patents
1 Richard Wharton Safco 1
1 Donald Abrino North American Refractories 1
1 Corey Curtis Conaway 1
1 Richard W. Kerrigan Sylvan America 1

Part of Pennsylvania