Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Ashikaga, JP ranks #5,599 worldwide for total patents filed all time, with 459 patents from 131 inventors. Leading employers of inventors based in Ashikaga, JP include Gfjapan, Kyoraku Co., Oiles.

Showing 1–50 of 131 inventors

Rank Inventor Primary Company Patents
1 Mitsuhiro Kishi Gfjapan 53
2 Masaaki Onodera Kyoraku Co. 33
3 Akihiko Okimura Oiles 23
#4 Tadashi Iizuka Hitachi 19
#4 Kensuke Goto onsemi 19
#6 Takeo Komatsubara Sanyo Electric Co. 14
#7 Yasushi Kawachi Daikyo Gomu Seiko 11
#8 Masamichi Ozeki Laurel Bank Machines Co. 9
#8 Hiroyuki Senda Sumitomo Electric Industries 9
#10 Hiroyuki Funatogawa 8
#10 Yoshimasa Wada Sumitomo Wiring Systems 8
#10 Shuji Nakazawa Kyocera 8
#13 Kouji Kurihara Yamaha Motor 7
#13 Minoru Ochiai Baldwin-Japan 7
#13 Hideo Sunaga Fujitsu Limited 7
#16 Fumio Horiuchi onsemi 6
#16 Yoshibumi Nakajima Sanyo Electric Co. 6
#16 Yoshiki Ikari Sanyo Electric Co. 6
#16 Shigeki Iwamoto Kureha 6
#20 Toyohiko Sunaoka Kabushiki Kaisha Hikoma Seisakusho 5
#20 Kazuhiro Nagashima Oiles 5
#20 Shin Kasahara Sanyo Electric Co. 5
#20 Shigeru Togashi Sanyo Electric Co. 5
#20 Masuhiro Yamada Advantest 5
#25 Syuji Motegi Sanyo Electric Co. 4
#25 Akira Hatsugai Sanyo Electric Co. 4
#25 Hiroki Ashizawa Toyota 4
#25 Kunio Kishino Honda Motor Co. 4
#25 Daizo Kotaki 4
#25 Hideaki Homma Toppan Printing Co. 4
#31 Zenjiro Uchida Sanyo Electric Co. 3
#31 Ikuo Fujino Mitsuba Electric Manufacturing Co. 3
#31 Tatsumi Abe 3
#31 Koji Aiba Canon 3
#31 Takeshi Onda Sanden 3
#31 Yasukazu Imaizumi Sanyo Electric Co. 3
#31 Mamoru Zennyoji Mitsuba Electric Manufacturing Co. 3
#31 Shoichi Moro Tokyo Tanabe Company Limited 3
#31 Toyoshige Shimizu Michelin 3
#31 Tatsuya Doi Otsuka Pharmaceutical Co. 3
#31 Yoshihiko Kon Sanyo Electric Co. 3
#31 Tsunehisa Yumoto Sanyo Electric Co. 3
#31 Kiyondo Kobayashi Sanyo Electric Co. 3
#31 Yoshiyuki Ichinosawa Optnics Precision Co. 3
#31 Kakuji Kume Sanyo Electric Co. 3
#31 Yo Matsutani Calsonic Kansei 3
#31 Yukikazu Tsuji Taisei 3
#48 Masaaki Meguro Sanyo Electric Co. 2
#48 Hideo Kumakura Hitachi 2
#48 Katsuyoshi Nakajima Jatco 2