Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–3 of 3 inventors

Rank Inventor Primary Company Patents
1 Pirmin Ulmann Imerys Graphite & Carbon Switzerland, Sa 2
2 Viola Groehn Merck 1
2 Stefan Birmanns Precitec Gmbh & Co. Kg 1