Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12427389 | Multi-leg movable punching bag | — | 2025-09-30 |
| 12429466 | Performance evaluation method for natural gas analysis system | Chao Zhang, Bing Liu, Nan Xing, Jing Tian, Li Xiao +7 more | 2025-09-30 |
| 10838361 | Holographic grating lithography system and a method for adjusting the self-collimation of the interference optical path thereof | Wenlong Zou, Chaoming Li, Xinrong Chen, Zhijian Cai, Quan Liu | 2020-11-17 |
| 9864113 | Method for manufacturing holographic blazed grating | Quan Liu, Minghui Chen | 2018-01-09 |
| 9380359 | Method and a device of service migration in an automatically switched optical network | Bin Li | 2016-06-28 |
| 9075194 | Method for manufacturing holographic bi-blazed grating | Quan Liu, Minghui Chen | 2015-07-07 |
| 8868967 | Method and system for connection-error handling of service in an automatically switched optical network | — | 2014-10-21 |