Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Tokyo, JP ranks #1 worldwide for total patents filed in 2011, with 21,999 patents from 11,174 inventors. Leading employers of inventors based in Tokyo, JP include Oki Data, Sony, The University Of Tokyo.

Showing 10,501–10,550 of 11,174 inventors

Rank Inventor Primary Company Patents
#4279 Kenichi Machiyama Oki Data 1
#4279 Shinichi Sumikawa Sony 1
#4279 Hidekazu Nishiki-I The University Of Tokyo 1
#4279 Shinichiro Mitani Renesas Technology 1
#4279 Tomohiro Banda Nippon Chemical Industrial Co. 1
#4279 Hirokazu Yago Daiichi Pure Chemicals Co. 1
#4279 Satoru Miyauchi Daiichi Pharmaceutical Co. 1
#4279 Chitoshi Aramaki Nec 1
#4279 Kotaro Kikuchi Chemetall Gmbh 1
#4279 Toshiro Yoshie Combi 1
#4279 Akihito Shibahara Kabushiki Kaisha Toshiba 1
#4279 Kenichi Nishino Sumitomo Electric Industries 1
#4279 Tomoaki Nishiguchi Hitachi 1
#4279 Ryuichi Honma Nippon Steel & Sumitomo Metal 1
#4279 Motomi Shimada Hitachi 1
#4279 Takafumi Izumiya Japan Tobacco 1
#4279 Masako Shimizu Adeka 1
#4279 Namie Baba Lotte Co. 1
#4279 Yukinori Nakamichi Japan Elastomer Co. 1
#4279 Yasuhiko Hagihara Nec 1
#4279 Kiyoshi Yoshinari Chugai Pharmaceutical 1
#4279 Toshihiko Onozuka Hitachi 1
#4279 Shinji Nakahara Sakai Chemical Industry Co. 1
#4279 Masahiro Jibiki Nec 1
#4279 Noboru HAMAGUCHI Mitsubishi Electric 1
#4279 Koji Miyama GE 1
#4279 Masafumi Iwata Mitsubishi Electric 1
#4279 Kousei Shimada Daiichi Sankyo Company, Limited 1
#4279 Hideshi Iki Jx Nippon Oil & Energy 1
#4279 Yasuki Sato Nec Display Solutions 1
#4279 Iwao Miura Fujitsu Limited 1
#4279 Hiroshi Dempo Nec 1
#4279 Toshikazu Ishikawa Renesas Electronics 1
#4279 Keita Kaifu Sony 1
#4279 Kenko Kurita Kao 1
#4279 Taiji Nishi Kuraray Co. 1
#4279 Mitsuhiko Shirakashi Ebara 1
#4279 Yoshitaka Togo Kajima 1
#4279 Fumihiko Abe Furukawa Electric Co. 1
#4279 Kouichi Nakagawa Mitsubishi Electric 1
#4279 Shigeru Okamoto Sansha Electric Manufacturing Co. 1
#4279 Junichiro Yamakawa Nihon Dempa Kogyo Co. 1
#4279 Koichi Matsuzaki Oki Data 1
#4279 Takeo Ito Kabushiki Kaisha Toshiba 1
#4279 Masami Ohnishi Renesas Technology 1
#4279 Fumiko Aikawa Altif Laboratories 1
#4279 Tae Nakahara Japan Display 1
#4279 Masanobu Hasegawa Canon 1
#4279 Simon Currie Sony 1
#4279 Koji Takashima Sony 1