For the Inventor, By the Inventor

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Sanko Sogyo Co., Ltd.

USPTO Granted Patents = 2

Forward Citations = 77

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8 inventors (with patents filed for the assignee):

Kazuhide Hattori (2 out of 10 patents)

Hiroyuki Yamaji (2 out of 2 patents)

Yoshikazu Hatakeyama (2 out of 2 patents)

4. Yoshiyuki Shida (2 out of 2 patents)

5. Takumi Kitaoka (2 out of 2 patents)

6. Takashi Kohama (2 out of 2 patents)

7. Atushi Tamura (1 out of 1 patent)

8. Atsushi Tamura (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5665285 - Method for producing a molded foam article with an integral skin (1997-09-09),

2. 5366674 - Process for producing expanded plastics with skin (1994-11-22),

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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#3 in Sanjo

#10,964 in Japan

Sanko Sogyo Co., Ltd.

Forward Citations = 77

8 inventors:

Kazuhide Hattori (2 out of 10 patents)

Hiroyuki Yamaji (2 out of 2 patents)

Yoshikazu Hatakeyama (2 out of 2 patents)

4. Yoshiyuki Shida (2 out of 2 patents)

5. Takumi Kitaoka (2 out of 2 patents)

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