Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4703505 | Speech data encoding scheme | Stephen S. Walker | 1987-10-27 |
| 4591826 | Gray code DAC ladder | — | 1986-05-27 |
| 4586193 | Formant-based speech synthesizer | Stephen S. Walker | 1986-04-29 |
| 4580131 | Binarily weighted D to a converter ladder with inherently reduced ladder switching noise | — | 1986-04-01 |
| 4451916 | Repeatered, multi-channel fiber optic communication network having fault isolation system | Paul W. Casper, Thomas J. Nixon, George A. Waschka, Jr., Charles R. Patisaul, James W. Toy +7 more | 1984-05-29 |
| 4449246 | Orderwire communication system | Thomas J. Nixon, George A. Waschka, Jr. | 1984-05-15 |
| 4221931 | Time division multiplied speech scrambler | — | 1980-09-09 |