Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8635288 | Methods and systems for expiration handling in electronic message systems | Cai Yigang | 2014-01-21 |
| 8077704 | Web service assisted real-time session peering between enterprise VoIP networks via internet | Yifei Lin | 2011-12-13 |