Tokyo, Japan

Hakugen Co., Ltd.


USPTO Granted Patents = 2

Trademarks = 3

Forward Citations = 37

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3 inventors (with patents filed for the assignee):

goldMedal Tetsuya Ashida (1 out of 12 patents)

silverMedal Masayoshi Ikezawa (1 out of 1 patent)

bronzeMedal Keinosuke Takeuchi (1 out of 2 patents)


2 patents:

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#4,058 in Tokyo

#10,966 in Japan

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Tokyo, Japan
Forward Citations = 37

3 inventors:

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