Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 6842516 | Digital adaptive filter and acoustic echo canceller using the same | — | 2005-01-11 | $7,390,000 |
| 5644635 | Method of and device for echo cancellation | — | 1997-07-01 | $34,292,000 |
| 5418848 | Control logic for echo canceller with double talk detector | — | 1995-05-23 |