Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5725771 | Process for enzyme pretreatment of drill cuttings | Sophie Aliphat, Frederic Perie, Christian Zurdo | 1998-03-10 |
| 5616842 | Device for evaluation of the lubricating charcteristics of a drilling mud | Jean Armengaud, Simeon Cortiade, Jacques Marti | 1997-04-01 |