Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Chikujo, JP ranks #28,216 worldwide for total patents filed all time, with 36 patents from 18 inventors. Leading employers of inventors based in Chikujo, JP include Yoshitomi Pharmaceutical Industries, Kabushiki Kaisha Toshiba, Expression Genetics.

Showing 1–18 of 18 inventors

Rank Inventor Primary Company Patents
1 Shigemi Kino Yoshitomi Pharmaceutical Industries 4
2 Kenichi Aihara Yoshitomi Pharmaceutical Industries 3
2 Yukihiro Takifuji Kabushiki Kaisha Toshiba 3
2 Kazuyoshi Sagara Expression Genetics 3
2 Hiroshi Yasumatsu Mitsubishi Pharma 3
#6 Tomohiro HAYASHIDA Yoshitomi Pharmaceutical Industries 2
#6 Rumiko Masuda Mitsubishi Pharma 2
#6 Koreichi Kimura Mitsubishi Pharma 2
#6 Takao Daicho 2
#6 Hiroyuki Akashi Yoshitomi Pharmaceutical Industries 2
#6 Mai Higuchi Mitsubishi Chemical 2
#6 Keiichiro Inada Mitsubishi Chemical 2
#13 Masamitsu Sakamori Yoshitomi Pharmaceutical Industries 1
#13 Noriyoshi Izumi Yoshitomi Pharmaceutical Industries 1
#13 Tetsuo Nagai Unknown 1
#13 Kadoya Kikumaru Yoshitomi Pharmaceutical Industries 1
#13 Takayuki Ogawa Yamasa Shoyu 1
#13 Takako Shiotsuki Yoshitomi Pharmaceutical Industries 1