Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Tosu, JP ranks #4,663 worldwide for total patents filed in 2021, with 23 patents from 19 inventors. Leading employers of inventors based in Tosu, JP include Shoei Chemical, Mitsubishi Electric, Tokyo Electron Limited.

Showing 1–19 of 19 inventors

Rank Inventor Primary Company Patents
1 Hirokazu Sasaki Shoei Chemical 4
2 Hiroshi Mashima Mitsubishi Electric 2
3 Hayato Tateno Shoei Chemical 1
3 Masaki Taira Tokyo Electron Limited 1
3 Takaaki Yoshinaga Hisamitsu Pharmaceutical Co. 1
3 Yuko Mitsuka Shoei Chemical 1
3 Masahiro Sato Hisamitsu Pharmaceutical Co. 1
3 Koji Imagawa Shinkawa 1
3 Shigeo Suzuki Hisamitsu Pharmaceutical Co. 1
3 Naoki Sakura Nec 1
3 Keisuke Matsuura Shoei Chemical 1
3 Makoto Kido Shoei Chemical 1
3 Yun Liu Baoshan Iron & Steel Co. 1
3 Junichi Ikuno Shoei Chemical 1
3 Akira Kitahara Seiko Epson 1
3 Nao Terasaki National Institute Of Advanced Industrial Science And Technology 1
3 Seiichiro Tsuru Hisamitsu Pharmaceutical Co. 1
3 Kazuya Kikunaga National Institute Of Advanced Industrial Science And Technology 1
3 Kentaro NAKASHIMA Hisamitsu Pharmaceutical Co. 1