Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5632884 | Asphalt compositions, method of preparation, and use | Didier Jamois, Yannick Jolivet, Pierre Le Perchec | 1997-05-27 |
| 5460714 | Liquid phase catalytic hydrocarbon hydroconversion with polyaromatic additive | Pierre Le Perchec, Jeanne Elmouchnino, Frederic Morel, Martine Boulinguiez | 1995-10-24 |
| 4869804 | Process for the thermal conversion of heavy petroleum fractions and refining residues, in the presence of oxygen compounds of sulfur and nitrogen and compositions containing these compounds | Pierre Le Perchec, Beatrice Debled, Michel Thomas | 1989-09-26 |