Issued Patents All Time
Showing 51–63 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4586165 | Thermo-optic information writing process and information support for implementing this process | Jean Cornet, Henriette Magna | 1986-04-29 |
| 4551733 | Protected optical disc comprising a flexible closure element | Jean Cornet, Francois Lange, Francois Le Carvennec, Roger Rascle | 1985-11-05 |
| 4405862 | Thermosensitive data-carrier designed for the recording of information and a method of recording information on such a data-carrier | Claude Bricot, Jean-Claude Dubois, Francois LeCarvennec, Henriette Magna | 1983-09-20 |
| 4405994 | Thermo-optic information writing process and information support for implementing this process | Jean Cornet, Henriette Magna | 1983-09-20 |
| 4381556 | Videodisc reader with longitudinally displaced turntable | Guy Bourdon | 1983-04-26 |
| 4380016 | Protected optical disc | Henriette Magna, Michel Thirouard | 1983-04-12 |
| 4334300 | Stigmatic optical device and an optical recording head equipped with said device | Louis Arquie, Claude Bricot, Michel Thirouard, Jean-Pierre Le Merer, Dominique Leterme | 1982-06-08 |
| 4321634 | Endless magnetic tape video recorder/player with head centering means | — | 1982-03-23 |
| 4308545 | Protected optical disc | Henriette Magna, Michel Thirouard | 1981-12-29 |
| 4275275 | Recording device for optically recording information on a carrier with a light spot and a positional control of the spot | Claude Bricot | 1981-06-23 |
| 4275428 | Multitrack magnetic reading head | — | 1981-06-23 |
| 4203133 | Optical player with half wave plate | Claude Bricot | 1980-05-13 |
| 4199783 | Optical system for recording and reading an information on a tape | Jean-Pierre Huignard | 1980-04-22 |