Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–5 of 5 inventors

Rank Inventor Primary Company Patents
1 Tadahira Ohkochi Duplo Seiko 1
1 Hiroyuki Ito Yamanouchi Pharmaceutical Co. 1
1 Kazuhito Oguri Duplo Seiko 1
1 Hideki Oiwa Duplo Seiko 1
1 Masayasu Matsumoto Duplo Seiko 1