Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025

Tokyo, JP ranks #1 worldwide for total patents filed in 2020, with 29,522 patents from 14,393 inventors. Leading employers of inventors based in Tokyo, JP include Hitachi Chemical Company, Fdk, Japan Aviation Electronics Industry, Limited.

Showing 13,451–13,500 of 14,393 inventors

Rank Inventor Primary Company Patents
#5815 Masahiro Aoshima Hitachi Chemical Company 1
#5815 Masaru Kihara Fdk 1
#5815 Toshiro Kobuchi Japan Aviation Electronics Industry, Limited 1
#5815 Keiichi Akahoshi National University Corporation Tokyo Medical And Dental University 1
#5815 Shigeru Furuki Alps Electric Co. 1
#5815 Toshihiko Sone Asahi Kasei Pharma 1
#5815 Kiyoshi Nakayama Daiichi Sankyo Company, Limited 1
#5815 Toshitake MURAKAMI Tombow Pencil Co. 1
#5815 Yoshimasa Ishida Chugai Pharmaceutical 1
#5815 Yasunori Ono Hitachi 1
#5815 Takuma TAKAGAWA Tombow Pencil Co. 1
#5815 Takashi Iga Zeon 1
#5815 Leo Yoshida Porter Classic 1
#5815 Ikuma OTA Konica Minolta 1
#5815 Takashi Anazawa Hitachi 1
#5815 Yoshimasa Ogawa Dai Nippon Printing Co. 1
#5815 Hiroyuki Iizuka Nec Communication Systems 1
#5815 Nao Nitta Sony 1
#5815 Takashi Senoo Mazda Motor 1
#5815 Yuichi Higuchi Canon 1
#5815 Mikihiro Endou Nichiman Co. 1
#5815 Hisayoshi Furihata Canon 1
#5815 Atsushi Date Canon 1
#5815 Norio Endou Tachi-S Co. 1
#5815 Satsuo Fukushima Fukuda Co. 1
#5815 Shunji Inoue Agc 1
#5815 Dengxin Hua Eko Instruments Co. 1
#5815 Hitoshi Ohki Daiichi Pharmaceutical Co. 1
#5815 Shuhei Okuda Honda Motor Co. 1
#5815 Kengo Hozumi Toppan Printing Co. 1
#5815 Koji Muneda Nippon Steel 1
#5815 Toshiyuki Ikoma National Institute For Materials Science 1
#5815 Yasuhiko Fukasawa Koken Co. 1
#5815 Yutaka Matsubara Japan Metals & Chemicals Co. 1
#5815 Nobuyuki Mano Smk 1
#5815 Eiichi Morioka Komatsu 1
#5815 Yuichi Kamori Dexerials 1
#5815 Kentaro Orita Ebara 1
#5815 Yuto Ishizu Sony 1
#5815 Takuya Kataoka Denso 1
#5815 Kensuke Nakashima Renesas Electronics 1
#5815 Fumihiko Tsukiyama Kose 1
#5815 Akira Ota Mitsubishi Electric 1
#5815 Katsumi Togawa Renesas Electronics 1
#5815 Takao Toi Renesas Electronics 1
#5815 Itsuya SATO Jfe Steel 1
#5815 Kiyofumi Nagai Ricoh Company 1
#5815 Atsushi Kataoka Daikin Industries 1
#5815 Mitsuhiro SUGIMURA Mitsubishi Electric 1
#5815 Juki Migii Ricoh Company 1