Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8121318 | Two channel audio surround sound circuit with automatic level control | Earl J. Slafon | 2012-02-21 |
| 7623669 | Simplified amplifier providing sharing of music with enhanced spatial presence through multiple headphone jacks | — | 2009-11-24 |
| 7564982 | Two channel audio surround sound circuit | — | 2009-07-21 |
| 6038324 | Automotive surround sound circuit background of the invention | — | 2000-03-14 |
| 5742691 | Surround sound converter | — | 1998-04-21 |
| 5737427 | Surround sound processor unit | — | 1998-04-07 |
| 5708718 | Surround sound processor system | Robert M. Stockman | 1998-01-13 |