Tokyo, Japan

Tokyo Optical Company, Ltd.


USPTO Granted Patents = 3

Trademarks = 1

Forward Citations = 48

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8 inventors (with patents filed for the assignee):

goldMedal Isao Kaetsu (2 out of 34 patents)

silverMedal Akihiko Ito (2 out of 10 patents)

bronzeMedal Masamichi Kato (2 out of 4 patents)

4 Koichiro Hayashi (2 out of 4 patents)

5 Hiroshi Okubo (2 out of 8 patents)

6 Yuji Maeda (1 out of 2 patents)

7 Toshikatsu Takahashi (1 out of 7 patents)

8 Kazuo Yayama (1 out of 1 patent)


3 patents:

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USPTO Data Jan 1 1976 - Dec 9 2025

3 Patents

#3,271 in Tokyo

#8,780 in Japan

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Tokyo, Japan
Forward Citations = 48

8 inventors:

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