Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10171679 | Differential online charging for text messages based on network type | Yigang Cai, Sanjeev Singh | 2019-01-01 |
| 9161187 | Caller ID for text messaging | Yigang Cai | 2015-10-13 |
| 9014730 | Device reachability in LTE networks for text messaging | Yigang Cai, Gyan Shanker | 2015-04-21 |
| 8990322 | Archive control for text messages | Yigang Cai | 2015-03-24 |
| 8825536 | Differential online charging for text messages based on network type | Yigang Cai, Sanjeev Singh | 2014-09-02 |
| 8447280 | Interface between 3GPP networks and 3GPP2 networks for WAP text messaging | Yigang Cai, Gopa Ganguly, Sanjeev Singh | 2013-05-21 |