Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–7 of 7 inventors

Rank Inventor Primary Company Patents
1 Yoshiharu Sawa Kyowa Chemical Industry Co. 2
2 Eiichi Ishigaki Ishigaki Company Limited 1
2 Takahiro Ueta Japan Hydrazine Co. 1
2 Atsushi Sugino Japan Hydrazine Co. 1
2 Tomoko Tachifuji Kyowa Chemical Industry Co. 1
2 Shuichi Nemugaki Japan Hydrazine Co. 1
2 Masaharu Kita Japan Hydrazine Co. 1