Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11041107 | Rheological agent, preparation methods and uses thereof | Sophie Drillieres, Aurélie Barette, Patrick Vongphouthone, Bertrand Guichard | 2021-06-22 |
| 8424619 | Drilling fluid | Bertrand Guichard, Andrea Valenti | 2013-04-23 |
| 7998905 | Drilling fluid containing chlorosulfonated alpha-olefin copolymers | Bertrand Guichard, Andrea Valenti | 2011-08-16 |