Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7362673 | Optical recording method and apparatus using this method | Johannes Hendrikus Maria Spruit, Arie Jeffrey Den Boef | 2008-04-22 |
| 7123563 | Optical recording method and apparatus using this method | Johannes Hendrikus Maria Spruit, Arie Jeffrey Den Boef | 2006-10-17 |
| 6118741 | Method and device for recording information on a carrier | Jakob Gerrit Nijboer | 2000-09-12 |
| 5835462 | Information carrier for different recording processes and device for recording therein | — | 1998-11-10 |
| 5587980 | Method deriving a quality signal from a read signal, and reading and recording devices which employ that method | Johannes Gerardus Fredericus Kablau, Petrus C. J. Hoeven | 1996-12-24 |
| 5025435 | Apparatus for reading or writing contrast enhanced information optical record carrier | Aartje W. Veenis | 1991-06-18 |
| 4949332 | Optical record carrier having contrast enhancing information and servo-tracks | Aartje W. Veenis | 1990-08-14 |
| 4933923 | Optical record carrier inscribed with read-out control data and apparatus for reading such record carrier in conformity with such control data | Aartje W. Veenis | 1990-06-12 |