For the Inventor, By the Inventor

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Siheung-si, South Korea

Cse Co., Ltd

USPTO Granted Patents = 3

EPO Patents = 3

Trademarks = 3

Forward Citations = 18

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4 inventors (with patents filed for the assignee):

Tsuyoshi Kobayashi (2 out of 104 patents)

Shigetomo Tamai (2 out of 6 patents)

Toru Takano (2 out of 3 patents)

4. Takashi Kojima (1 out of 96 patents)

5. Kojima Takashi (0 patent)

6. Kobayashi Tsuyoshi (0 patent)

7. Ei-Jae Sung (0 patent)

8. Takano Toru (0 patent)

9. Tamai Shigetomo (0 patent)

3 patents: Sort by Forward Citations

1. 12081673 - User authentication system, user authentication server, and user authentication method (2024-09-03),

2. 8875264 - System, method and program for off-line two-factor user authentication (2014-10-28),

3. 8752147 - System and method for two-factor user authentication (2014-06-10),

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USPTO Data Jan 1 1976 - Jan 20 2026

3 Patents

#12 in Siheung-si

#2,657 in South Korea

Siheung-si, South Korea

Cse Co., Ltd

Forward Citations = 18

4 inventors:

Tsuyoshi Kobayashi (2 out of 104 patents)

Shigetomo Tamai (2 out of 6 patents)

Toru Takano (2 out of 3 patents)

4. Takashi Kojima (1 out of 96 patents)

5. Kojima Takashi (0 patent)

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