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

Muroran, JP All Time

300 patents  ·  113 inventors

Ranked #7,555 of 112,640 cities Top 7%

Muroran, JP ranks #7,555 worldwide for total patents filed all time, with 300 patents from 113 inventors. Leading employers of inventors based in Muroran, JP include Hitachi, Denso, Sumitomo Electric Industries.

Showing 1–50 of 113 inventors

Rank Inventor Primary Company Patents
1 Kouichi Yamazaki Hitachi 21
2 Satoru Ohsaki Denso 14
3 Kouji Tanabe Sumitomo Electric Industries 12
#4 Yoru Wada The Japan Steel Works 10
#5 Keizo Ohnishi Mitsubishi Electric 9
#5 Rinzo Kayano The Japan Steel Works 9
#7 Kazuhiro Miki Sharp Kabushiki Kaisha 8
#7 Junichi Kishigami NTT 8
#9 Yuji Kawauchi Nippon Steel 7
#9 Shingo Satoh Toyota 7
#11 Norio Anzawa Nippon Steel 6
#11 Michiaki Takahashi — 6
#13 Hironobu Arashima The Japan Steel Works 5
#13 Masaru Iwasa Sumitomo Electric Industries 5
#13 Kiichiro Tsuchida Nippon Steel 5
#16 Hidenori Hiromatsu Mitsubishi Steel Mfg. Co. 4
#16 Hideaki Souma Save The Planet Co. 4
#16 Toru Ishiguro Tohoku University 4
#16 Yoshiyuki Iwanami The Japan Steel Works 4
#16 Noboru Okuyama Nippon Steel 4
#16 Yoshiro Koyasu Nippon Steel 4
#16 Shizuo Takahashi Hitachi 4
#16 Ryoji Ishigaki The Japan Steel Works 4
#16 Takanari Miyaki Nippon Steel 4
#16 Yoshinori Kawaharazaki The Japan Steel Works 4
#26 Osamu WAKAO Furuya Metal Co. 3
#26 Mika Makino Kyowa Hakko Kogyo Co. 3
#26 Kouichi Takasawa The Japan Steel Works 3
#26 Ryuro Kurahashi Kawasaki 3
#26 Ryuichi Seki Nippon Steel 3
#26 Takayuki Kisu Nippon Steel & Sumitomo Metal 3
#26 Hirokazu Madarame The Japan Steel Works 3
#26 Koichi Takasawa The Japan Steel Works 3
#26 Takafumi Hosoya Japan Steel Works M&E 3
#26 Yuji Sasagawa Furuya Metal Co. 3
#36 Akiyoshi Fuji The Japan Steel Works 2
#36 Atsutoshi Muto The Japan Steel Works 2
#36 Tetsunari Nakamura Kajima 2
#36 Kazuomi Tomita Nippon Steel 2
#36 Masaji Yoneta The Japan Steel Works 2
#36 Einao Anzai Nippon Steel 2
#36 Noriyuki Masumitsu Nippon Steel 2
#36 Akira Otaki Mitsubishi Heavy Industries Engine & Turbocharger 2
#36 Mitsunori Funazaki The Japan Steel Works 2
#36 Yuan C. Fu US Dept of Energy 2
#36 Yasushi Owaki — 2
#36 Norimitsu Konno Nippon Steel 2
#36 Masaru Fukumoto The Japan Steel Works 2
#36 Teruo Kawabata Nippon Steel 2
#36 Masami Wajima Nippon Steel 2

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