For the Inventor, By the Inventor

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Seoul, South Korea

Penta Security Inc.

USPTO Granted Patents = 5

EPO Patents = 2

Trademarks = 1

Forward Citations = 0

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15 inventors (with patents filed for the assignee):

Sang Gyoo Sim (5 out of 25 patents)

Keon Yun (4 out of 4 patents)

Jin Hyeok Oh (3 out of 4 patents)

4. Duk Soo Kim (3 out of 27 patents)

5. Seok Lee (3 out of 78 patents)

6. Myung Woo Chung (2 out of 5 patents)

7. Tae Gyun Kim (2 out of 44 patents)

8. Sang Min Lee (2 out of 81 patents)

9. Jun Yong Lee (2 out of 2 patents)

10. Minchul Kim (1 out of 65 patents)

11. Sang Jun Lee (1 out of 2 patents)

12. Myong Cheol Lim (1 out of 1 patent)

13. Jin Hyuk Jung (1 out of 1 patent)

14. Sun Woo Yun (1 out of 1 patent)

15. Heesun Yun (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 12483548 - SDP-based information protection method and apparatus for IoT cloud security (2025-11-25),

2. 12309136 - Method and apparatus for access control on ship network (2025-05-20),

3. 12058593 - Driving negotiation method and apparatus (2024-08-06),

4. 11936773 - Encryption key management method in data subscription system (2024-03-19),

5. 11914564 - Merkle tree-based data management method and apparatus (2024-02-27),

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USPTO Data Jan 1 1976 - Dec 23 2025

5 Patents

#596 in Seoul

#1,786 in South Korea

Seoul, South Korea

Penta Security Inc.

Forward Citations = 0

15 inventors:

Sang Gyoo Sim (5 out of 25 patents)

Keon Yun (4 out of 4 patents)

Jin Hyeok Oh (3 out of 4 patents)

4. Duk Soo Kim (3 out of 27 patents)

5. Seok Lee (3 out of 78 patents)

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