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USPTO Patent Rankings Data through Dec 31, 2025
Home › Cities › Yamaguchi, JP

Yamaguchi, JP All Time

5,112 patents  ·  1,016 inventors

Ranked #658 of 112,640 cities Top 1%

Yamaguchi, JP ranks #658 worldwide for total patents filed all time, with 5,112 patents from 1,016 inventors. Leading employers of inventors based in Yamaguchi, JP include Canon, Mazda Motor, GE.

Showing 1–50 of 1,016 inventors

Rank Inventor Primary Company Patents
1 Hajime Yamamoto Canon 229
2 Hiroyuki Oda Mazda Motor 118
3 Koichi Nakagawa Canon 78
#4 Akihiro Saito GE 69
#5 Junji Momoda Tokuyama 63
#6 Masaaki Kawasaki Mitsui Chemicals 60
#7 Yuji Otsuka Hitachi 55
#8 Shigeki Yokoyama Fujitsu Limited 52
#8 Kazuhiko Ishihara Unknown 52
#8 Yoshinao Kawasaki Hitachi 52
#11 Koji Matsui Nec 50
#11 Mitsuo Matsumoto Kuraray Co. 50
#13 Kenichi Matsumura Smc 47
#14 Teruo Tanaka Hitachi 45
#15 Kunio Yamamoto Hitachi Koki Co. 42
#16 Toru Kawaguchi Panasonic 38
#16 Yuki Nagao Canon 38
#18 Yasuo Miyoshi Ricoh Company 37
#18 Daisuke Nishikawa Ntt Docomo 37
#20 Shinji Yoshihara Denso 33
#21 Tomoyuki Tashiro Panasonic 31
#21 Mikihiro Takahashi Central Glass Company, Limited 31
#23 Minoru Yokoshima Nippon Kayaku 30
#23 Junji Takenaka Tokuyama 30
#23 Mamoru Yamada Takasago International 30
#26 Masahiko Hagihara Ube Industries 29
#26 Shinichi Kawamoto Hitachi 29
#28 Yoshifumi Mori Sony 27
#28 Kazutoshi Matsumoto Sumitomo Metal Mining Co. 27
#28 Hideaki Sadamura Toda Kogyo 27
#31 Yasuo Matsumori Ube Industries 25
#32 Takayoshi MORINAKA Central Glass Company, Limited 24
#32 Tatsuo Tomomori Toyo Kohan Co. 24
#32 Yutaka Tamano Tosoh 24
#35 Tomoya Ishikawa Sony 23
#36 Takanori Miyazaki Tokyo Electron Limited 21
#36 Narikazu Hashimoto Kobe Steel 21
#36 Shoji Shikita Ube Industries 21
#39 Motohisa Shimizu Ube Industries 20
#39 Yoji Tozawa Tdk 20
#39 Hitoshi Ohmura Toyo Kohan Co. 20
#42 Shinichi Kojoh Mitsui Chemicals 19
#42 Yukihiro Kanechika Tokuyama 19
#42 Hideyuki Itoi GE 19
#45 Takayuki NEGISHI Tokuyama 18
#45 Masayuki Uegami Toda Kogyo 18
#45 Takumi Kagawa Tosoh 18
#45 Akiou Kikuchi Central Glass Company, Limited 18
#45 Takafumi SHIMODA Tokuyama 18
#45 Hideaki Ishida Casio Computer Co. 18

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