Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8204022 | Method of providing transcoding during voice-over-internet protocol handoff | Chung-Zin Liu | 2012-06-19 |
| 7844728 | Packet filtering/classification and/or policy control support from both visited and home networks | Thomas W. Anderson, Chung-Zin Liu, Stinson Mathai | 2010-11-30 |
| 7206574 | Automated exchange of broadband communication addresses over a non-broadband channel in a wireless telecommunication system | Penny Lynne Bright, Karla Hunter, Anne Yin-Fee Lee | 2007-04-17 |
| 6895011 | Method and apparatus for re-sequencing data packets | — | 2005-05-17 |
| 6721565 | Handover of wireless calls between systems supporting circuit and packet call models | Richard P. Ejzak, John Matthew Gafrick, Ronald Martin | 2004-04-13 |
| 5343526 | Method for establishing licensor changeable limits on software usage | — | 1994-08-30 |