For the Inventor, By the Inventor

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Hmn Technologies Co., Limited

USPTO Granted Patents = 4

EPO Patents = 1

Forward Citations = 1

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12 inventors (with patents filed for the assignee):

Changwu Xu (3 out of 5 patents)

Jianping Li (2 out of 16 patents)

Yan Wang (2 out of 9 patents)

4. Liping Ma (2 out of 4 patents)

5. Keqiang Cui (1 out of 1 patent)

6. Guangjun Wang (1 out of 4 patents)

7. Yingli Tao (1 out of 1 patent)

8. Yang Liu (1 out of 35 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)

4 patents: Sort by Forward Citations

1. 12483346 - Data secrecy method for submarine cable system with failure and submarine cable system (2025-11-25),

2. 12292611 - Submarine optical cable system (2025-05-06),

3. 11955764 - Submarine network device (2024-04-09),

4. 11265080 - Submarine cable fault determining method and apparatus (2022-03-01),

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USPTO Data Jan 1 1976 - Dec 16 2025

4 Patents

#65 in Tianjin

#5,565 in China

Hmn Technologies Co., Limited

Forward Citations = 1

12 inventors:

Changwu Xu (3 out of 5 patents)

Jianping Li (2 out of 16 patents)

Yan Wang (2 out of 9 patents)

4. Liping Ma (2 out of 4 patents)

5. Keqiang Cui (1 out of 1 patent)

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