Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5030522 | Black-colored coating deposited on a substrate | Roland Luthier, Francis Levy | 1991-07-09 |
| 4997538 | Process for depositing a black-colored coating on a substrate and a black-colored coating obtained using this process | Roland Luthier, Francis Levy | 1991-03-05 |
| 4207834 | Process and devices for the elaboration of preforms for optical fibers | Jean Canteloup, Michel A. Braguier, Roger J. Tueta | 1980-06-17 |