Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697441 | Selective zonal isolation of oil wells | Claude Vercaemer, Demosthenis Georgeou Pafitis, Geoffrey Maitland, Jean-Pierre Poyet | 1997-12-16 |
| 5652200 | Water based drilling fluid additive and methods of using fluids containing additives | Gerald Meeten, Paul Way | 1997-07-29 |