Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6545477 | Method and apparatus for determining the resistivity of a formation through which a cased well passes | Paul Beguin, Dominique Benimeli, Patrick Ehret, Francois Hecquet, Peter van der Wal | 2003-04-08 |
| 6351129 | Methods of determining resistivity of a formation through which a cased borehole passes | — | 2002-02-26 |
| 5036283 | Method and apparatus for measuring the resistivity of earth formations using anti-parallel active and passive focussing electrodes | Jean-Claude Trouiller | 1991-07-30 |