Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9148351 | Systems and methods to handle codec changes in call quality calculations | Nancy Yuan, Quenie Q. Sun, Michael E. Campbell | 2015-09-29 |
| 5684967 | System and method for generalized network topology representation | John J. McKenna, Luciene Costa Nascimento, Gary Alan Schlachter, Jonathan Beck | 1997-11-04 |