For the Inventor, By the Inventor

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Hfr, Inc.

USPTO Granted Patents = 3

Trademarks = 19

Forward Citations = 5

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17 inventors (with patents filed for the assignee):

Beum Geun Cho (2 out of 2 patents)

Sang Woo Kim (2 out of 106 patents)

Sun Ik Lee (2 out of 2 patents)

4. Chan Gook Park (1 out of 11 patents)

5. Sang-woo Kim (1 out of 42 patents)

6. Jinsoo Sung (1 out of 2 patents)

7. Myeong Hun Song (1 out of 20 patents)

8. Beum-Geun Cho (1 out of 1 patent)

9. Myung-Hun Song (1 out of 1 patent)

10. Sungjin Byun (1 out of 1 patent)

11. Sun-Ik Lee (1 out of 1 patent)

12. Jong-Yeong Lim (1 out of 1 patent)

13. Eun-Ho Lee (1 out of 1 patent)

14. Ka Yoon Kim (1 out of 1 patent)

15. Myung Hun Song (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 12464270 - Method and apparatus for managing line number sheet for mobile communications system (2025-11-04),

2. 9800343 - Method and system for compensating for latency difference due to switchover in fronthaul in ring topology form (2017-10-24),

3. 9596048 - Method for sharing optical fiber for cloud-based wired and wireless access network, and system and apparatus for same (2017-03-14),

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USPTO Data Jan 1 1976 - Sep 15 2026

3 Patents

#139 in

#2,798 in South Korea

Hfr, Inc.

Forward Citations = 5

17 inventors:

Beum Geun Cho (2 out of 2 patents)

Sang Woo Kim (2 out of 106 patents)

Sun Ik Lee (2 out of 2 patents)

4. Chan Gook Park (1 out of 11 patents)

5. Sang-woo Kim (1 out of 42 patents)

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