Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–18 of 18 inventors

Rank Inventor Primary Company Patents
1 Akio Yamamoto Sri Sports Limited 5
2 Toshihiko Murakami Hitachi 4
3 Katsunori Kokubun Sony 3
#4 Hiroshi Kashino Hitachi Maxell 2
#4 Masahito Hanao Sumitomo Metal Industries 2
#4 Kenji Taguchi Sanyo Electric Co. 2
#4 Nobuhiro Fujiwara Smc 2
#8 Naoki Tajima Konica 1
#8 Yukihiro Yanagawa Kuraray Co. 1
#8 Masami Shimizu Kao 1
#8 Masaru Nakayama Honda Motor Co. 1
#8 Arata Kudou Dic 1
#8 Kazushige Ishiura Kuraray Co. 1
#8 Takeshi Ota 1
#8 Takaaki Asakura Dainippon Ink And Chemicals 1
#8 Gun Seki Hitachi Maxell 1
#8 Tamio Shikano Yupo 1
#8 Kenjirou Kiyono Mitsubishi Kagaku Media Co. 1