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 Mitsubishi Electric, Astellas Pharma, Nisshinbo Industries.

Showing 9,851–9,900 of 11,174 inventors

Rank Inventor Primary Company Patents
#4279 Kenichi Uto Mitsubishi Electric 1
#4279 Mari Fukuda Astellas Pharma 1
#4279 Kazuko Matsumoto Nisshinbo Industries 1
#4279 Yukio Iimura Toshiba Kikai 1
#4279 Junichi Komagata Sony 1
#4279 Masayuki Kashima Oki Electric Industry Co. 1
#4279 Yoshikazu Ichiyama Nidec 1
#4279 Junichi Maruyama Mitsukan Group 1
#4279 Junko Nemoto Canon 1
#4279 Yoshitsugu Matsuura Hitachi Chemical Company 1
#4279 Akeo Maruyama Ricoh Company 1
#4279 Hiroshi Ikekame Hitachi 1
#4279 Takashi Kase Canon 1
#4279 Akihiko Imagi Mitsubishi Electric 1
#4279 Hiroshi Nakata Jfe Steel 1
#4279 Hirofumi Mukai Hitachi 1
#4279 Kenichi Sakurai Yamaha Motor 1
#4279 Naoki Nagase Fujitsu Semiconductor Limited 1
#4279 Masahiro Izutsu Ebara 1
#4279 Junichi Ushikubo Oki Data 1
#4279 Yoshihiko Taira Fujitsu Limited 1
#4279 Tomomi Murayama Kabushiki Kaisha Toshiba 1
#4279 Takeshi Kamimura 1
#4279 Kensaku Kuroki Mitsubishi Electric 1
#4279 Ryuichi Kobayashi Canon 1
#4279 Hironobu Murai Ricoh Company 1
#4279 Hiroshi Moriya Hitachi 1
#4279 Katsunori Ishimiya Sony 1
#4279 Yo Yamamoto Hitachi High-Tech Science 1
#4279 Tomonori Ijiri Terumo Kabushiki Kaisha 1
#4279 Kiyomi Tsuchiya Nippon Light Metal Company 1
#4279 Toshiyuki Suda Ihi 1
#4279 Yosuke Mizuki Stanley Electric Co. 1
#4279 Koichiro Yano Seiko Epson 1
#4279 Hirotsugu Iijima Minebea Mitsumi 1
#4279 Susumu Kimura Japan Display 1
#4279 Emiko Shiraishi Ricoh Company 1
#4279 Yuji Miki Jfe Steel 1
#4279 Atsushi Yokoi IBM 1
#4279 Takashi Sugie Canon 1
#4279 Junichiro Hara Nissan Motor Co. 1
#4279 Norio Iwayasu Hitachi 1
#4279 Morio Takahashi Nec 1
#4279 Hirohito Kawama Kureha 1
#4279 Nobuyoshi Uno Nippon Steel 1
#4279 Jun Minakuti Sony 1
#4279 Jun Takasaki Astellas Pharma 1
#4279 Masaaki Nakano Hitachi 1
#4279 Akihiro Ouchi Canon 1
#4279 Mondo Kasano Subaru 1