Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4913232 | Method of isolating production zones in a well, and apparatus for implementing the method | Andre Cheymol, Alain G. Basse, Gilbert Blu | 1990-04-03 |
| 4800753 | Geomechanical probe for a drilling well | Damien Despax, Jean-Pierre Martin | 1989-01-31 |
| 4625795 | Geomechanical probe for a drilling well | Damien Despax, Jean-Pierre Martin | 1986-12-02 |
| 4474234 | Safety valve installed below an activation pump in a hydrocarbon production well | Herve M. Lefebvre | 1984-10-02 |
| 4444251 | Combined installation comprising an activation pump and a safety valve disposed below this pump, in a hydrocarbon production well | Herve M. Lefebvre | 1984-04-24 |
| 4223738 | Production well-heads for underwater oil wells | Jean-Pierre L. Boutet | 1980-09-23 |