Tokyo, Japan

Teikoko Piston Ring Co., Ltd.


USPTO Granted Patents = 1

Forward Citations = 4

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7 inventors (with patents filed for the assignee):

goldMedal Nobuyuki Nishiyama (1 out of 13 patents)

silverMedal Hideki Takeda (1 out of 15 patents)

bronzeMedal Tadashi Yamaguchi (1 out of 20 patents)

4 Hiroshi Yamagata (1 out of 10 patents)

5 Katsutoshi Nozaki (1 out of 2 patents)

6 Akihisa Inoue (1 out of 69 patents)

7 Tsuyoshi Masumoto (1 out of 49 patents)


1 patent:

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USPTO Data Jan 1 1976 - Dec 9 2025

1 Patents

#5,752 in Tokyo

#15,591 in Japan

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Tokyo, Japan
Forward Citations = 4

7 inventors:

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