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For the Inventor, By the Inventor

Tokyo, Japan

Nac Image Technology Inc.


USPTO Granted Patents = 2

% Expired Patents = 50.0


Trademarks = 1

Forward Citations = 0

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7 inventors (with patents filed for the assignee):

goldMedal Shogo Nakamura (2 out of 25 patents)

silverMedal Eiji Suzuki (1 out of 2 patents)

bronzeMedal Yutaka Hirata (1 out of 2 patents)

4.  Shinichi Ueda (1 out of 2 patents)

5.  Masaya Yamamoto (1 out of 1 patent)

6.  Takuji Higashikawa (1 out of 1 patent)

7.  Norihito Numa (1 out of 1 patent)


2 patents:

1. 11464405 - Visual function test device, visual function training device, and method thereof (2022-10-11),
2. 10874357 - Eye movement measuring device and eye movement analysis system (2020-12-29),
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USPTO Data Jan 1 1976 - Oct 6 2026

2 Patents

#4,361 in Tokyo

#11,124 in Japan

Tokyo, JP
Tokyo, Japan

Nac Image Technology Inc.

Forward Citations = 0

7 inventors:

goldMedal Shogo Nakamura (2 out of 25 patents)

silverMedal Eiji Suzuki (1 out of 2 patents)

bronzeMedal Yutaka Hirata (1 out of 2 patents)

4.  Shinichi Ueda (1 out of 2 patents)

5.  Masaya Yamamoto (1 out of 1 patent)

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