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Yamakawa Yakuhin Kogyo Kabushiki Kaisha

USPTO Granted Patents = 2

Forward Citations = 50

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6 inventors (with patents filed for the assignee):

Masanao Kamei (2 out of 39 patents)

Shinichi Nakamura (2 out of 163 patents)

Kazuo Yoshinaga (2 out of 93 patents)

4. Hiroyuki Nohira (2 out of 45 patents)

5. Kazuharu Katagiri (2 out of 126 patents)

6. Mariko Kai (2 out of 2 patents)

2 patents: Sort by Forward Citations

1. 4873018 - Optically active compound, process for producing same and liquid crystal (1989-10-10),

2. 4798680 - Optically active compound, process for producing same and liquid crystal (1989-01-17),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#4,062 in Tokyo

#10,962 in Japan

Yamakawa Yakuhin Kogyo Kabushiki Kaisha

Forward Citations = 50

6 inventors:

Masanao Kamei (2 out of 39 patents)

Shinichi Nakamura (2 out of 163 patents)

Kazuo Yoshinaga (2 out of 93 patents)

4. Hiroyuki Nohira (2 out of 45 patents)

5. Kazuharu Katagiri (2 out of 126 patents)

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