Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594050 | Cement composition containing chemically crosslinked polyvinyl alcohol (PVA) | Roland Audebert, Joseph E. Janca, Pierre Maroy | 1997-01-14 |
| 5503672 | High temperature retarders for oil field cements, cement slurries and corresponding cementing processes | Véronique Barlet-Gouedard, Pierre Maroy | 1996-04-02 |