For the Inventor, By the Inventor

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Hiroshima, Japan

Hatamura Engine Research Office Ltd.

USPTO Granted Patents = 2

EPO Patents = 1

Forward Citations = 5

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6 inventors (with patents filed for the assignee):

Koichi Hatamura (2 out of 22 patents)

Jun Bota (1 out of 1 patent)

Taizo Fujimura (1 out of 1 patent)

4. Susumu Takayama (1 out of 1 patent)

5. Toshio Yamada (1 out of 1 patent)

6. Atsushi Morita (1 out of 4 patents)

7. Toshio Yamada (0 patent)

2 patents: Sort by Forward Citations

1. 9494061 - Variable valve system (2016-11-15),

2. 8534261 - Four-cycle engine (2013-09-17),

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USPTO Data Jan 1 1976 - Dec 23 2025

2 Patents

#82 in Hiroshima, 729-3431

#10,965 in Japan

Hiroshima, Japan

Hatamura Engine Research Office Ltd.

Forward Citations = 5

6 inventors:

Koichi Hatamura (2 out of 22 patents)

Jun Bota (1 out of 1 patent)

Taizo Fujimura (1 out of 1 patent)

4. Susumu Takayama (1 out of 1 patent)

5. Toshio Yamada (1 out of 1 patent)

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