Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6469968 | Varying the process of rewriting to extend the life of a information carrier | Gijsbert J. Van Den Enden, Johannes Hendrikus Maria Spruit, Johan P. W. B. Duchateau | 2002-10-22 |
| 6115340 | Modifying the recording process to extend the life of a rewritable information carrier | Gijsbert J. Van Den Enden, Johannes H. M. Spruit, Johan P. W. B. Duchateau | 2000-09-05 |