Issued Patents 2018
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10104236 | IPBX control interface for distributed networks | Zhishen Liu | 2018-10-16 |
| 10057416 | Identifying and processing of unreturned calls in IPBX | Zhishen Liu, Qing Zhao | 2018-08-21 |
| 10002327 | Systems, methods, devices and arrangements for emergency call services and emergency broadcasts | Garth Judge | 2018-06-19 |
| 9955021 | Analysis of call metrics for call direction | Zhishen Liu, Qing Zhao | 2018-04-24 |
| 9949000 | IPBX control interface for distributed networks | Zhishen Liu | 2018-04-17 |
| 9935857 | Analysis of system conditions from endpoint status information | Zhishen Liu | 2018-04-03 |