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 Altif Laboratories, Ricoh Company, Mitsubishi Electric.

Showing 10,001–10,050 of 11,174 inventors

Rank Inventor Primary Company Patents
#4279 Seiichi Aikawa Altif Laboratories 1
#4279 Takatsugu Fujishiro Ricoh Company 1
#4279 Takeshi Utakoji Mitsubishi Electric 1
#4279 Mitsuhiro Sekiguchi Asahi Kasei Chemicals 1
#4279 Kuniaki Hiromatsu Asahi Glass Co. 1
#4279 Tomiya Abe Hitachi Cable 1
#4279 Toshihisa Nakamura Terumo Kabushiki Kaisha 1
#4279 Hisanori Ohara Sumitomo Electric Industries 1
#4279 Nobuhiro Arai Sumitomo Chemical 1
#4279 Kazuhiro Umezu Aderans Company Limited 1
#4279 Ayuta Yamada Rigaku 1
#4279 Hiroshi Hayama Nec 1
#4279 Yukiko Sahashi Ricoh Company 1
#4279 Satoshi Ebato Sony 1
#4279 Yasuhiro Osakabe Hoya 1
#4279 Nobuya Hayashi Saga University 1
#4279 Masato Hayashi Taisho Pharmaceutical Co. 1
#4279 Yasuharu Ooishi Yamatake 1
#4279 Shigetaka Kasai Toray Industries 1
#4279 Fumirou Matsuki Chimei Innolux 1
#4279 Paul Hodgins Sony 1
#4279 Yasushi Itoh Mitsubishi Electric 1
#4279 Jirou Fukui Origin Electric Company, Limited 1
#4279 Shigeru Takizawa Hoya 1
#4279 Arata Ajiro Comcast 1
#4279 Hidetaka Natsume Nec 1
#4279 Kaoru Sugimoto Fujitsu Limited 1
#4279 Yoshimichi Takano Nippon Hoso Kyokai 1
#4279 Hideshi Okamoto Otsuka Pharmaceutical Factory 1
#4279 Michiko Miyamoto Toray Industries 1
#4279 Soutarou Iwabuchi Bridgestone 1
#4279 Masato Ishida Canon 1
#4279 Koichi Ebata Nec 1
#4279 Yuji Miyagi Nihon Micronics 1
#4279 Atsuki Ono Nec 1
#4279 Chinatsu Watanabe Fujifilm 1
#4279 Taro Kurita Felica Networks 1
#4279 Mikio Kamada Sony 1
#4279 Yutaka Koma Jtekt 1
#4279 Ayumi Mizobuchi Sony 1
#4279 Sakae Kitajo Nec 1
#4279 Yasutaka Tanikawa Fujitsu Limited 1
#4279 Jinichi Hiyama Calsonic Kansei 1
#4279 Mitsufumi Fukuyama Hoya 1
#4279 Masaya Sahashi Kabushiki Kaisha Toshiba 1
#4279 Norifumi Tokuda Mitsubishi Electric 1
#4279 Koichiro Komatsu Nikon 1
#4279 Yuichi Idehara Mitsubishi Electric 1
#4279 Hiroshi Nagata Astellas Pharma 1
#4279 Hiroya Fukunaga Adeka 1