Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7132222 | Magnetic etching process, especially for magnetic or magnetooptic recording | Claude Chappert, Jacques Ferre | 2006-11-07 |
| 6605321 | Method of treating materials by irradiation | Dafiné Ravelosona-Ramasitera, Claude Chappert, Véronique Mathet | 2003-08-12 |