Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8553869 | Method for implementing RBT interworking, media gateway control function device, and application server | Haopeng Zhu, Jianmin Liu, Yu Sun, Haoyu Wang, Lingyan Wu | 2013-10-08 |
| 8131265 | System and method for implementing multimedia ring back tone service | Yihua Cheng, Xiaoqing Hu | 2012-03-06 |