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Poratechno Co., Ltd.

USPTO Granted Patents = 2

Forward Citations = 3

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4 inventors (with patents filed for the assignee):

Yoshinori Ishii (2 out of 4 patents)

Takao Uesugi (2 out of 3 patents)

Koichi Watanabe (2 out of 4 patents)

4. Takeshi Yamamoto (1 out of 3 patents)

2 patents: Sort by Forward Citations

1. 7045216 - Polarizing plate (2006-05-16),

2. 6985292 - Polarizing plate and liquid-crystal display containing the same (2006-01-10),

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USPTO Data Jan 1 1976 - Dec 9 2025

2 Patents

#44 in Niigata

#10,988 in Japan

Poratechno Co., Ltd.

Forward Citations = 3

4 inventors:

Yoshinori Ishii (2 out of 4 patents)

Takao Uesugi (2 out of 3 patents)

Koichi Watanabe (2 out of 4 patents)

4. Takeshi Yamamoto (1 out of 3 patents)

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