Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–12 of 12 inventors

Rank Inventor Primary Company Patents
1 Ryoji Hoshi Shin-Etsu Handotai Co. 2
1 Izumi Fusegawa Shin-Etsu Handotai Co. 2
3 Kaoru Koyama Seiko Epson 1
3 Yukio Itoi Shin-Etsu Handotai Co. 1
3 Hitoshi Kabasawa Mec International Co. 1
3 Hidehiko Nishino Shin-Etsu Handotai Co. 1
3 Sumio Wakito Olympus 1
3 Tatsuo Abe Shin-Etsu Handotai Co. 1
3 Hiromasa Hashimoto Shin-Etsu Handotai Co. 1
3 Masahiko Urano Shin-Etsu Handotai Co. 1
3 Masanori Takazawa Shin-Etsu Handotai Co. 1
3 Tomiichi Sudou Shin-Etsu Handotai Co. 1