Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–4 of 4 inventors

Rank Inventor Primary Company Patents
1 Yuji Kawauchi Nippon Steel 2
2 Kouji Tanabe Sumitomo Electric Industries 1
2 Yoshiro Koyasu Nippon Steel 1
2 Mika Makino Kyowa Hakko Kogyo Co. 1