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Yamakyu Chain Kabushiki Kaisha

USPTO Granted Patents = 3

Forward Citations = 33

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4 inventors (with patents filed for the assignee):

Tsuyoshi Nakamura (2 out of 16 patents)

Fukukazu Kato (2 out of 5 patents)

Keiji Ohara (2 out of 3 patents)

4. Masaru Furuyama (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 6196381 - Conveyor chain unit and conveyor chain (2001-03-06),

2. 6050397 - Conveyor chain unit and conveyor chain (2000-04-18),

3. 5412934 - Bushed chain with roller fitted on outside diameter of oil-impregnated (1995-05-09),

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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#454 in

#8,767 in Japan

Yamakyu Chain Kabushiki Kaisha

Forward Citations = 33

4 inventors:

Tsuyoshi Nakamura (2 out of 16 patents)

Fukukazu Kato (2 out of 5 patents)

Keiji Ohara (2 out of 3 patents)

4. Masaru Furuyama (1 out of 1 patent)

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