Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7586903 | System and method for VoIP call transfer using instant message service in an IP multimedia subsystem | Kevin Song, Chifu Lin | 2009-09-08 |
| 5703781 | Automatic market making system and method | Charles R. Martell, Michael J. Cassidy, Anita K. Ramsey, Zih-Fang Liu, H. Anderson McKellar | 1997-12-30 |