Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5163110 | Pitch control in artificial speech | William J. Arthur | 1992-11-10 |
| 5140639 | Speech generation using variable frequency oscillators | William J. Arthur | 1992-08-18 |
| 5029213 | Speech production by unconverted digital signals | Kevin Kachikian, William J. Arthur | 1991-07-02 |
| 4852168 | Compression of stored waveforms for artificial speech | — | 1989-07-25 |
| 4833718 | Compression of stored waveforms for artificial speech | — | 1989-05-23 |
| 4805220 | Conversionless digital speech production | Kevin Kachikian | 1989-02-14 |
| 4692941 | Real-time text-to-speech conversion system | Richard P. Jacks | 1987-09-08 |
| 4617645 | Compaction method for waveform storage | — | 1986-10-14 |