Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4492967 | Optical recording disc | Dirk Jan Broer | 1985-01-08 |
| 4476214 | Optical information disk comprising tellurium, selenium and antimony | Pieter Zalm, Bernardus A. J. Jacobs | 1984-10-09 |
| 4318112 | Optical recording disc | Petrus J. Kivits, Marinus R. J. de Bont | 1982-03-02 |
| 4290075 | Optical recording device having several ablative recording layers | Bernardus A. J. Jacobs, Pieter Zalm | 1981-09-15 |