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Kokkoman Shoyu Co., Ltd.

USPTO Granted Patents = 2

Forward Citations = 49

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4 inventors (with patents filed for the assignee):

Hirozi Watanabe (2 out of 3 patents)

Tatuo Aonuma (2 out of 3 patents)

Michio Kiuchi (2 out of 4 patents)

4. Takeshi Akao (2 out of 11 patents)

2 patents: Sort by Forward Citations

1. 4235354 - Sealing structure for rotary valves (1980-11-25),

2. 4180188 - Sealing structure for rotary valves (1979-12-25),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#2 in Noda

#10,962 in Japan

Kokkoman Shoyu Co., Ltd.

Forward Citations = 49

4 inventors:

Hirozi Watanabe (2 out of 3 patents)

Tatuo Aonuma (2 out of 3 patents)

Michio Kiuchi (2 out of 4 patents)

4. Takeshi Akao (2 out of 11 patents)

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