For the Inventor, By the Inventor

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Hmn Technologies Co., Limited

USPTO Granted Patents = 5

EPO Patents = 2

Forward Citations = 1

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17 inventors (with patents filed for the assignee):

Changwu Xu (3 out of 5 patents)

Jianping Li (3 out of 20 patents)

Yan Wang (2 out of 10 patents)

4. Liping Ma (2 out of 4 patents)

5. Keqiang Cui (1 out of 1 patent)

6. Guangjun Wang (1 out of 5 patents)

7. Yingli Tao (1 out of 1 patent)

8. Yang Liu (1 out of 41 patents)

9. Ge Jin (1 out of 1 patent)

10. Yuhe Li (1 out of 1 patent)

11. Li Yang (1 out of 1 patent)

12. Xiaoyong Qin (1 out of 1 patent)

13. Jing Ning (1 out of 1 patent)

14. Daofang Zhong (1 out of 1 patent)

15. Ling Zhao (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 12538456 - Heat dissipation device for an underwater equipment (2026-01-27),

2. 12483346 - Data secrecy method for submarine cable system with failure and submarine cable system (2025-11-25),

3. 12292611 - Submarine optical cable system (2025-05-06),

4. 11955764 - Submarine network device (2024-04-09),

5. 11265080 - Submarine cable fault determining method and apparatus (2022-03-01),

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USPTO Data Jan 1 1976 - Oct 6 2026

5 Patents

#59 in Tianjin

#5,228 in China

Hmn Technologies Co., Limited

Forward Citations = 1

17 inventors:

Changwu Xu (3 out of 5 patents)

Jianping Li (3 out of 20 patents)

Yan Wang (2 out of 10 patents)

4. Liping Ma (2 out of 4 patents)

5. Keqiang Cui (1 out of 1 patent)

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