Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–17 of 17 inventors

Rank Inventor Primary Company Patents
1 Katsuhiro Fujimoto Asahi Kasei Kabushiki Kaisha 2
1 Kensuke Masuda Ricoh Company 2
1 Masaaki Aramaki Asahi Kasei Chemicals 2
#4 Kohji Kimura Hitachi 1
#4 Sueyoshi Suetome Asahi Organic Chemicals Industry Co. 1
#4 Etsuo Kamada Asahi Kasei Kogyo Co. 1
#4 Shun'ichi Gomi Asahi Kasei Kabushiki Kaisha 1
#4 Yohsuke Honda Asahi Kasei Chemicals 1
#4 Naoaki Yamazaki Asahi Kasei Chemicals 1
#4 Masanobu Wakizoe Asahi Kasei Chemicals 1
#4 Takashi Nasu Asahi Yukizai 1
#4 Taketoshi Usui Asahi Kasei Kogyo Co. 1
#4 Shinobu Kamimura Asahi Yukizai 1
#4 Keiichi Toda Japan Elastomer Co. 1
#4 Ichiro Ibuki Asahi Kasei Chemicals 1
#4 Hidehiro Kourogi Asahi Organic Chemicals Industry Co. 1
#4 Akio Kashiwada Asahi Kasei Kogyo Co. 1