Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5278900 | Digital echo canceller comprising a double-talk detector | Petrus J. Van Gerwen, Franciscus Antonius Maria Van De Laar | 1994-01-11 |
| 4903247 | Digital echo canceller | Petrus J. Van Gerwen, Franciscus Antonius Maria Van De Laar | 1990-02-20 |
| 4807173 | Frequency-domain block-adaptive digital filter | Petrus C. W. Sommen, Theodoor A. C. M. Claasen, Petrus J. Van Gerwen | 1989-02-21 |
| 4637046 | Speech analysis system | Robert J. Sluijter | 1987-01-13 |
| 4625327 | Speech analysis system | Robert J. Sluijter | 1986-11-25 |