Tokyo, Japan

Opexpark Inc.


USPTO Granted Patents = 2

Trademarks = 1

Forward Citations = 0

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5 inventors (with patents filed for the assignee):

goldMedal Hideki Okuda (2 out of 21 patents)

silverMedal Hiroshi Yamakita (1 out of 1 patent)

bronzeMedal Jun Okamoto (1 out of 52 patents)

4 Go Mukumoto (1 out of 3 patents)

5 Yoshihiro Muragaki (1 out of 1 patent)


2 patents:

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USPTO Data Jan 1 1976 - Sep 15 2026

2 Patents

#4,418 in Tokyo

#11,270 in Japan

Tokyo, JP
Tokyo, Japan
Forward Citations = 0

5 inventors:

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