Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–4 of 4 inventors

Rank Inventor Primary Company Patents
1 Hiroyuki Ito Yamanouchi Pharmaceutical Co. 1
1 Takuya Tashiro Duplo Seiko 1
1 Masayasu Matsumoto Duplo Seiko 1
1 Hideki Oiwa Duplo Seiko 1