Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–5 of 5 inventors

Rank Inventor Primary Company Patents
1 Kazuhiro Akiishi Denka Seiken Co. 1
1 Noriyuki Izutani Denka Seiken Co. 1
1 Risa Kohiyama Denka Company Limited 1
1 Ryotaro MITSUMATA Denka Company Limited 1
1 Yuhko Hirao Denka Seiken Co. 1