Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4596143 | Method and apparatus for detecting fractures by ultrasonic echography along the wall of a material or a formation | — | 1986-06-24 |
| 4495605 | Method for determining the dip angle of geological formations traversed by a borehole | Robert Desbrandes | 1985-01-22 |
| 4378051 | Driving device for displacing an element in a conduit filled with liquid | Henri Cholet, Robert Desbrandes | 1983-03-29 |
| 4289025 | Sonde with rotatable pad for carrying out logging measurements in a borehole | Robert Desbrandes | 1981-09-15 |