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Toei Scientific Industrial Co., Ltd.

USPTO Granted Patents = 3

Forward Citations = 0

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5 inventors (with patents filed for the assignee):

Ryoichi Utsumi (3 out of 3 patents)

Shigeyuki Sato (3 out of 3 patents)

Naoyoshi Watanabe (2 out of 11 patents)

4. Tomokazu Yamashiro (1 out of 1 patent)

5. Hiroyuki Kenju (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 12241926 - Test apparatus (2025-03-04),

2. 11828798 - Test apparatus (2023-11-28),

3. 9741453 - Prober chuck for magnetic memory, and prober for magnetic memory provided with said chuck (2017-08-22),

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USPTO Data Jan 1 1976 - Dec 16 2025

3 Patents

#20 in Miyagi

#8,785 in Japan

Toei Scientific Industrial Co., Ltd.

Forward Citations = 0

5 inventors:

Ryoichi Utsumi (3 out of 3 patents)

Shigeyuki Sato (3 out of 3 patents)

Naoyoshi Watanabe (2 out of 11 patents)

4. Tomokazu Yamashiro (1 out of 1 patent)

5. Hiroyuki Kenju (1 out of 1 patent)

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