Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6496586 | Thin Loudspeaker | Michael A. Hayes, John K. Conley, Sean P. O'Brien, Michael J. Parrella, Thomas Lundie +1 more | 2002-12-17 |
| 6142254 | Decorative speaker cover | Sean P. O'Brien | 2000-11-07 |
| 5815582 | Active plus selective headset | Jeffrey N. Denenberg, Ralph Busch, John E. Hohman | 1998-09-29 |
| 5699436 | Hands free noise canceling headset | Jeffrey N. Denenberg | 1997-12-16 |
| 4839743 | Interactive video and audio controller | Robert Best | 1989-06-13 |