Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Showing 1–22 of 22 inventors

Rank Inventor Primary Company Patents
1 Kouji Seki Clarion Co. 2
1 Hitoshi Okada Clarion Co. 2
1 Akira Idoue Kddi 2
1 Mamoru Harada Kurume University 2
#5 Kazumi Kimura Canon 1
#5 Makoto Tsunakawa Olympus 1
#5 Hiroshi Yachi Japan Energy 1
#5 Atsushi Makita Dainippon Sumitomo Pharma Co. 1
#5 Toshihiro Hirai Nippon Mining Company Limited 1
#5 Akira Oku Mitsubishi Tanabe Pharma 1
#5 Akira Nozaki Canon 1
#5 Masashi Kumagai Nikko-Materials Co. 1
#5 Akira Taoka Hamamatsu Photonics K.K. 1
#5 Toshiyuki Imagawa Sony 1
#5 Yasuo Kogure Mitsui Toatsu Chemicals, Incorporated 1
#5 Hiroyuki Umezawa Sanyo Electric Co. 1
#5 Tomo Iwata Sumitomo Chemical 1
#5 Takeshi Kuribayashi Sumitomo Electric Industries 1
#5 Yasuhiro Toida Japan Energy 1
#5 Suguru Oota Nippon Mining & Metals Co. 1
#5 Morihiro Niimi Clarion Co. 1
#5 Kiyoshi Ogino Jtekt 1