Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5976441 | Process for manufacturing an article in the form of a slab and article manufactured | Didier Guyot | 1999-11-02 |
| 5779957 | Article, in particular a building covering plate, and process for manufacturing said article | Pascal Soukatchoff | 1998-07-14 |