Tokyo, Japan

Nihonkagakusangyo Co., Ltd.


USPTO Granted Patents = 4

Forward Citations = 3

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12 inventors (with patents filed for the assignee):

goldMedal Makoto Uchida (2 out of 14 patents)

silverMedal Katsuyoshi Kakinuma (2 out of 11 patents)

bronzeMedal Akihiro Iiyama (2 out of 8 patents)

4 Hajime Kashima (2 out of 2 patents)

5 Chisato Arata (2 out of 2 patents)

6 Kazuhiro Hamada (1 out of 1 patent)

7 Yoshito Sugibuchi (1 out of 1 patent)

8 Takeo Tsukamoto (1 out of 165 patents)

9 Toshio Kutami (1 out of 1 patent)

10 Miyoshi Okamura (1 out of 1 patent)

11 Isao Amemiya (1 out of 1 patent)

12 Sumitaka Watanabe (1 out of 1 patent)


4 patents:

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USPTO Data Jan 1 1976 - Jan 6 2026

4 Patents

#2,781 in Tokyo

#7,421 in Japan

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Tokyo, Japan
Forward Citations = 3

12 inventors:

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