Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5612294 | Scleroglucan based drilling mud | Alain Ladret, Alain Donche | 1997-03-18 |
| 5330015 | Application of scleroglucan muds to drilling deviated wells | Alain Donche, Patrick Isambourg | 1994-07-19 |