Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–4 of 4 inventors

Rank Inventor Primary Company Patents
1 Michiei Nakamura Dainichiseika Color & Chemicals Mfg. Co. 3
2 Kazuya Nakamichi Maruzen Oil Co. 1
2 Naoto Inayama Smc 1
2 Hiroyuki Mikami Hitachi 1