Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8295456 | IMS budget control for a media change during an IMS session | Yigang Cai, Qinghong He, Jie Su, Chaoliang Zhang, Jay Z. Zhao | 2012-10-23 |
| 8139735 | IMS gateway systems and methods | Yigang Cai, Sheng-Chang Chen, Qinghong He, Ling Jiang, Judith A. Stafford +3 more | 2012-03-20 |