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

Iwaki, JP All Time

3,522 patents  ·  693 inventors

Ranked #945 of 112,640 cities Top 1%

Iwaki, JP ranks #945 worldwide for total patents filed all time, with 3,522 patents from 693 inventors. Leading employers of inventors based in Iwaki, JP include Mitsubishi Electric, Sumitomo Chemical, Kureha Kagaku Kogyo.

Showing 1–50 of 693 inventors

Rank Inventor Primary Company Patents
1 Yukio Sato Mitsubishi Electric 116
2 Osamu Matsumoto Mitsubishi Electric 108
3 Makoto Satoh Sumitomo Chemical 67
#4 Takayuki Katto Kureha Kagaku Kogyo 62
#5 Toshiya Mizuno Kureha Kagaku Kogyo 51
#6 Yo Iizuka Kureha Kagaku Kogyo 41
#7 Teruo Sakagami Kureha Kagaku Kogyo 40
#8 Satoru Kumazawa Kureha Kagaku Kogyo 39
#9 Yukichika Kawakami Kureha Kagaku Kogyo K.K. 38
#10 Hiroyasu Yamamoto Fujitsu Limited 33
#10 Naohiro Murayama Kureha Kagaku Kogyo 33
#12 Masahiro Kurokawa Mitsubishi Gas Chemical Company 31
#13 Masayuki Suganami Hitachi Automotive Systems 30
#13 Takashi Terauchi Renesas Technology 30
#15 Toshitaka Kouyama Kureha Kagaku Kogyo K.K. 28
#16 Ryuichi Saji Tungaloy 27
#16 Masahito Tada Kureha Kagaku Kogyo K.K. 27
#16 Takaaki Nakamura Mitsubishi Electric 27
#19 Seiji Sakamoto Diafoil Company, Limited 26
#20 Yuzo Hayashi Alps Electric Co. 25
#21 Eisaku Takahashi Fujitsu Limited 24
#21 Seiji Usami Sharp Kabushiki Kaisha 24
#21 Masao Hayashi Canon 24
#21 Hideaki Doi Hitachi 24
#25 Takafumi Shida Kureha Kagaku Kogyo 23
#25 Yukihiko Haikawa Sharp Kabushiki Kaisha 23
#27 Yoshikichi Teramoto Kureha Kagaku Kogyo 22
#27 Hideo Arabori Kureha Kagaku Kogyo 22
#27 Hiroyasu Shinkawa Kureha Kagaku Kogyo 22
#27 Ken Kashiwadate Kureha Kagaku Kogyo K.K. 22
#31 Yukio Ichikawa Kureha Kagaku Kogyo 21
#31 Yusuke Hirano Tungaloy 21
#31 Isao Ikuta Hitachi 21
#31 Tamio Noguchi Merck 21
#35 Hiroshi Obara Ricoh Company 20
#35 Masato Arahira Kureha Kagaku Kogyo K.K. 20
#35 Mitsuru Hoshino Kureha Kagaku Kogyo K.K. 20
#35 Tsutomu Tatekawa Murata Manufacturing Co. 20
#39 Aisaku Nagai Kureha Kagaku Kogyo 19
#39 Michihiro Sato Unknown 19
#41 Toshihide Saishoji Kureha Kagaku Kogyo 18
#41 Mitsuo Takeuchi Fujitsu Limited 18
#41 Masaki Ohya Kureha Kagaku Kogyo 18
#41 Kazuo Sakuma Tessera 18
#45 Atsushi Ito Kureha Kagaku Kogyo 17
#45 Hiroshi Kawase Sony 17
#45 Akio Nishijima Alps Electric Co. 17
#45 Susumu Shimizu Kureha Kagaku Kogyo 17
#49 Sadakazu Shiga Alps Electric Co. 16
#49 Yoshiaki Takata Mitsubishi Materials 16

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