Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5608711 | Method and means for changing pit depth on an optical recordable medium | Richard L. Wilkinson, William W. Boyle | 1997-03-04 |
| 5608712 | Method and means for varying pit duty cycle and changing pit depth on an optical recordable medium | John Rilum, Richard L. Wilkinson, Shigang Li, William W. Boyle | 1997-03-04 |
| 4701603 | Focus control system for optical information recorder or player | W. Ray Dakin | 1987-10-20 |