Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8934620 | Acoustic echo cancellation for high noise and excessive double talk | — | 2015-01-13 |
| 6147979 | System and method for echo cancellation in a communication system | Alan Dean Michel | 2000-11-14 |
| 5519767 | Voice-and-data modem call-waiting | Patrick J. O'Horo | 1996-05-21 |