Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4791514 | Magnetic recording device with rotating head | Ernst Huijer, Jean-Claude Lehureau | 1988-12-13 |
| 4570249 | Optical read/write head for recording and playback of an optical disk and an optical device associated with said optical head | Roland Malissin | 1986-02-11 |
| 4554653 | Focusing optical head movable radially by a carriage | Roland Malissin | 1985-11-19 |