Tokyo, Japan

Shin-estu Quartz Products Co., Ltd.


USPTO Granted Patents = 3

Forward Citations = 8

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4 inventors (with patents filed for the assignee):

goldMedal Shigeru Yamagata (1 out of 19 patents)

silverMedal Tatsuhiro Sato (1 out of 24 patents)

bronzeMedal Tomomi Usui (1 out of 9 patents)

4 Yasuo Ohama (1 out of 16 patents)


3 patents:

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USPTO Data Jan 1 1976 - Dec 2 2025

3 Patents

#3,271 in Tokyo

#8,779 in Japan

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Tokyo, Japan
Forward Citations = 8

4 inventors:

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