Issued Patents 2016
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9432519 | Identifying and processing of unreturned calls in IPBX | Zhishen Liu, Qing Zhao | 2016-08-30 |
| 9300679 | System and method for monitoring computing servers for possible unauthorized access | Zhishen Liu, Qing Zhao | 2016-03-29 |
| 9247389 | Systems, methods, devices and arrangements for emergency call services | Garth Judge | 2016-01-26 |