Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Bizen, JP ranks #7,447 worldwide for total patents filed all time, with 307 patents from 76 inventors. Leading employers of inventors based in Bizen, JP include Kabushiki Kaisha Toshiba, Kuraray Co., Sumitomo Electric Industries.

Showing 1–50 of 76 inventors

Rank Inventor Primary Company Patents
1 Jun Tsujimoto Kabushiki Kaisha Toshiba 22
2 Mitsunori Hitomi Kuraray Co. 17
3 Shushi Nishimura Kuraray Co. 16
3 Shigeru Okuda Sumitomo Electric Industries 16
#5 Junichi Arima Mitsubishi Electric 14
#6 Kiyoto Otsuka Kuraray Co. 10
#7 Masanobu Nogome Sumitomo Electric Industries 9
#7 Takayuki Yoshikawa Kuraray Co. 9
#7 Mitsunori Nishita Kuraray Co. 9
#10 Tadao Taniguchi Shinagawa Refractories Co. 8
#10 Takushi Ohsaki Nippon Sanso 8
#10 Satoru Arita Omron 8
#13 Yumika NISHITA Kuraray Co. 7
#13 Yasuhiro Makino Sanyo Electric Co. 7
#13 Kenichi Koyakumaru Kuraray Co. 7
#16 Yoshifumi Egawa Kuraray Co. 6
#16 Toshiyuki Matsuki Subaru 6
#16 Yukio Kusaka New Oji Paper Co 6
#16 Hajime Asami Shinagawa Refractories Co. 6
#16 Shigeo Yoshino Shinagawa Refractories Co. 6
#21 Yoshimitsu Takeuchi Kyushu Refractories Co. 5
#21 Yukitoshi Kubota Shinagawa Refractories Co. 5
#23 Hiroyuki NISHINAMI Kuraray Co. 4
#23 Seiji Kihara Kyushu Refractories Co. 4
#23 Tadashi Zenbutsu Shinagawa Refractories Co. 4
#23 Hiroaki Kitatomi Kuraray Co. 4
#23 Ryoichi Yoshino Shinagawa Refractories Co. 4
#28 Masamichi Takai Shinagawa Refractories Co. 3
#28 Shizuo Ishimura Kuraray Chemical Co. 3
#28 Hiroyuki Danjyo Shinagawa Refractories Co. 3
#28 Hiroyasu Uiji Shinagawa Refractories Co. 3
#28 Yoshio Yasuda Shinagawa Refractories Co. 3
#28 Kenki Ishizawa Nippon Kokan Co. 3
#28 Shinya Tago Kuraray Co. 3
#28 Akimi Ogawa Kuraray Chemical Co. 3
#28 Akira Shiranita Shinagawa Refractories Co. 3
#37 Yoshiaki Osaki Shinagawa Refractories Co. 2
#37 Eishi Iida Shinagawa Refractories Co. 2
#37 Tatsuaki Baba Toda Kogyo 2
#37 Shuzo Horita Shinagawa Refractories Co. 2
#37 Toshihiko Akizuki Shinagawa Refractories Co. 2
#37 Tetsuhiko Matsuura Kuraray Chemical Co. 2
#37 Teruhiro Okada Kuraray Chemical Co. 2
#37 Koyo Yanagawa Shinagawa Refractories Co. 2
#37 Hohzoh Kiyohara Railway Technical Research Institute 2
#37 Toshisuke Hoshino Nippon Kokan Co. 2
#37 Yoshitaka Kuroishi Sumitomo Electric Industries 2
#37 Akinori YAMABATA Kuraray Co. 2
#37 Takeo Okamura Kyushu Refractories Co. 2
#50 Masao Fushida 1