Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6634442 | Process for using biodegradable drilling muds | Josiane Durrieu, Alain Rabion, Laurent Fraisse, Michel Guillerme | 2003-10-21 |
| 6426321 | Biodegradable drilling mud and process for its preparation | Josiane Durrieu, Anne Basseres, Michel Guillerme | 2002-07-30 |
| 5725771 | Process for enzyme pretreatment of drill cuttings | Sophie Aliphat, Frederic Perie, Alain Martignon | 1998-03-10 |