Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874060 | Device for receiving sound waves in a well | Philippe Guerendel, Charles Naville, Jean Laurent | 1989-10-17 |
| 4773501 | Device for generating seismic impulses inside a drilling through the fall of a weight onto an anchored target element | Jean Laurent, Yves Ollivier | 1988-09-27 |
| 4699240 | Device for applying pulsed radial stresses to the wall of a well | — | 1987-10-13 |
| 4682309 | Device for generating acoustic pulses by implosion, inside a well | Jean Laurent | 1987-07-21 |
| 4648478 | Device for generating sound pulses inside a well, by percussion | Pierre Grolet, Jean Laurent | 1987-03-10 |