Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9863826 | Sensor device and residual stress detection system employing same | Lang Xu, Qinxue Pan, Dingguo Xiao, Xiao Li, Jun GUO +2 more | 2018-01-09 |
| 9036800 | Billing for calls and routing of billing information in an internet protocol multimedia subsystem | Yigang Cai | 2015-05-19 |