Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Kozagawa, JP ranks #13,317 worldwide for total patents filed all time, with 128 patents from 21 inventors. Leading employers of inventors based in Kozagawa, JP include Semiconductor Energy Laboratory, Toshiba, Canon.

Showing 1–21 of 21 inventors

Rank Inventor Primary Company Patents
1 Noritaka Ishihara Semiconductor Energy Laboratory 48
2 Toshihiko Oguchi Toshiba 17
3 Koji Ogaki Canon 14
#4 Koichi Tsunemi Kabushiki Kaisha Toshiba 9
#5 Keiji Sekine Asahi Fiber Glass Co. 8
#6 Takeyoshi Mimura Tokyo Ohka Kogyo Co. 7
#6 Takashi Iimura Hitachi Medical 7
#8 Hidenori Shirakawa Osaka University 2
#8 Yoshiyuki Tsuzuki Kabushiki Kaisha Toshiba 2
#8 Tomitake Omori Panasonic 2
#8 Koji Soga Yushiro Chemical Industry Co. 2
#12 Midori Nakazato Yushiro Chemical Industry Co. 1
#12 Atsushi Suka Shin-Etsu Chemical Co. 1
#12 Toshio Suhara Isuzu Motors Limited 1
#12 Eiji Yamashina Isuzu Motors Limited 1
#12 Osamu Sekimizu Isuzu Motors Limited 1
#12 Kuniyuki Kanai Sumitomo Bakelite Co. 1
#12 Yoshitaka Ishioka Canon 1
#12 Mikinori Suzuki Yushiro Chemical Industry Co. 1
#12 Tamotsu Matsuki Yushiro Chemical Industry Co. 1
#12 Yasunari Oshimoto Yushiro Chemical Industry Co. 1