Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025

Kimitsu, JP ranks #4,567 worldwide for total patents filed all time, with 601 patents from 145 inventors. Leading employers of inventors based in Kimitsu, JP include NS Sumikin Stainless, Mitsui Chemicals, Fujitsu Limited.

Showing 1–50 of 145 inventors

Rank Inventor Primary Company Patents
1 Ken Kimura NS Sumikin Stainless 42
2 Shinji Kiyono Mitsui Chemicals 30
3 Nobutaka Shimizu Fujitsu Limited 27
#4 Hiroshi Kawato Idemitsu Kosan Co. 24
#4 Akikazu Nakano Idemitsu Kosan Co. 24
#4 Yasuo Hamamoto Sumitomo Electric Industries 24
#7 Naoto Takeda Teac 22
#8 Hiroshi Tamehiro Nippon Steel 19
#9 Yoshio Shindou Nippon Steel 18
#10 Michihiro Sawada Idemitsu Kosan Co. 14
#11 Ikuo Ochiai Nippon Steel 12
#11 Toshiaki Ohno Seiko Epson 12
#13 Koji Hanya Nippon Steel 11
#13 Yuichiro Terashi Mitsui Petrochemical Industries 11
#15 Mitsugu Terada Mitsui Petrochemical Industries 9
#15 Keizo Fujiwara Microsoft 9
#15 Motoo Kabeya Nippon Steel 9
#18 Hiroaki Masui Nippon Steel 8
#19 Yasuyuki Taniguchi Kabushiki Kaisha Toshiba 7
#19 Tetsuo Nishiyama Nec 7
#19 Hiromasa Nomura Nippon Steel 7
#22 Akira Tokumitsu Nippon Steel Chemical Co. 6
#22 Yujiro Miyauchi Nippon Steel 6
#22 Masayuki Tendo Nippon Steel 6
#22 Masamitsu Wakoh Nippon Steel 6
#26 Hidehiro Arita Nippon Steel 5
#26 Yuuji Nakashima Nippon Steel 5
#26 Kiwamu Tokuhisa Nippon Steel Chemical Co. 5
#26 Kazuya Miyamoto Nippon Steel Chemical Co. 5
#26 Akira Tsuyuki Kabushiki Kaisha Toshiba 5
#26 Ryosuke Komami Nippon Steel 5
#32 Kenichiroh Matsumura Nippon Steel & Sumitomo Metal 4
#32 Hajime Onozawa Nippon Steel 4
#32 Nariyasu Muroga Nippon Steel & Sumitomo Metal 4
#32 Ryuichi Hiratsuka Nippon Steel 4
#32 Nobuhiko Matsuzu Nippon Steel 4
#32 Tsutomu Haeno Nippon Steel 4
#32 Junji Nakashima Nippon Steel 4
#32 Hidetoshi Hatanaka Nippon Steel 4
#32 Ryuichi Shimura Nippon Steel & Sumitomo Metal 4
#32 Akihito Kiyose Nippon Steel 4
#32 Toshimichi Murata Nippon Steel 4
#43 Yumi NAKAYAMA Idemitsu Kosan Co. 3
#43 Katsunori Tobisawa Nippon Steel 3
#43 Hiroo Ishibashi Nippon Steel 3
#43 Toyokazu Akamatsu Sakata Seed 3
#43 Norimasa Uehara Nippon Steel 3
#43 Mansei Tanaka Nippon Steel 3
#43 Katsushige Matsuzaki Nippon Steel 3
#43 Taketoshi Taira Nippon Steel 3