Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5330015 | Application of scleroglucan muds to drilling deviated wells | Alain Donche, Alain Vaussard | 1994-07-19 |
| 5306340 | Scleroglucan-based compositions and their use as a cementation spacer | Alain Donche | 1994-04-26 |