Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8774178 | Call transfer with multiple application servers in session initiation protocol-based network | Isaac Jian Liu, Alexander Aihao Yin, Chun Yu Yu | 2014-07-08 |
| 8046381 | IMS network access using legacy devices | Yigang Cai, Simon Chen, Bill Xiang Yu Qian, Alexander Aihao Yin, Elsie Shu Fang Zhang +1 more | 2011-10-25 |