Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–4 of 4 inventors

Rank Inventor Primary Company Patents
1 Kenichi Kojima Riken Keiki Co. 1
1 Yutaka Tanabe Kawasaki 1
1 Kenichi ABURAI Unknown 1
1 Tomoo Ishiguro Riken Keiki Co. 1