Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6620480 | Pre-engraved substrate for magnetic, magneto-optical, or phase transition optical disc | — | 2003-09-16 |
| 5770238 | Master disk for making dies for pressing in particular optical disks | Jean-Francois Dufresne | 1998-06-23 |
| 5763002 | Methods of manufacture of master disk for making a die for pressing optical disks | Jean-Francois Dufresne | 1998-06-09 |
| 5671205 | Compact disc comprising an antipiracy marking and method of providing compact discs with an antipiracy marking | — | 1997-09-23 |
| 5622815 | Process of manufacture of a master disk and/or of an optical disk | — | 1997-04-22 |
| 5312718 | Method of manufacturing dies for pressing optical disks | Jean-Francois Dufresne | 1994-05-17 |
| 5166014 | Method for the manufacture of an optically readable disc, and discs obtained by this method | — | 1992-11-24 |