Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5876822 | Reversible optical information medium | James Coombs, Johan P. W. B. Duchateau | 1999-03-02 |
| 5802032 | Method and device for recording a mark having a substantially constant number of pulses per unit length independent of writing speed on an optical information carrier | Bernardus A. J. Jacobs, James Coombs, Johannes H. M. Spruit, Johan P. W. B. Duchateau | 1998-09-01 |