For the Inventor, By the Inventor

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Sigma P.i. Co., Ltd.

USPTO Granted Patents = 2

EPO Patents = 1

Forward Citations = 46

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4 inventors (with patents filed for the assignee):

Masahiko Ito (1 out of 54 patents)

Yoshitaka Shimada (1 out of 1 patent)

Yoshiharu Aoki (1 out of 2 patents)

4. Hisashi Nakano (1 out of 4 patents)

2 patents: Sort by Forward Citations

1. 10204250 - Medium containing identifier (2019-02-12),

2. 5947297 - Packaging case (1999-09-07),

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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#1,025 in Osaka

#10,964 in Japan

Sigma P.i. Co., Ltd.

Forward Citations = 46

4 inventors:

Masahiko Ito (1 out of 54 patents)

Yoshitaka Shimada (1 out of 1 patent)

Yoshiharu Aoki (1 out of 2 patents)

4. Hisashi Nakano (1 out of 4 patents)

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