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Marubeni Plax Corporation

USPTO Granted Patents = 1

Forward Citations = 27

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4 inventors (with patents filed for the assignee):

Osamu Nakagiri (1 out of 4 patents)

Mikio Tanaka (1 out of 10 patents)

Yoshihiro Koyanagi (1 out of 9 patents)

4. Hideo Nakata (1 out of 1 patent)

1 patent: Sort by Forward Citations

1. 5927336 - Check valve, pouch with the check valve, and manufacturing apparatus (1999-07-27),

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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#908 in

#15,539 in Japan

Marubeni Plax Corporation

Forward Citations = 27

4 inventors:

Osamu Nakagiri (1 out of 4 patents)

Mikio Tanaka (1 out of 10 patents)

Yoshihiro Koyanagi (1 out of 9 patents)

4. Hideo Nakata (1 out of 1 patent)

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