Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6369575 | Methods and apparatuses for measuring the resistivity of drilling mud in a borehole | Jan W. Smits, Ollivier Faivre, Jean-Claude Trouiller | 2002-04-09 |
| 6046593 | Method/apparatus for measuring mud resistivity using a focused-electrode system | Jan W. Smits, Ollivier Faivre, Jean-Claude Trouiller | 2000-04-04 |
| 5394345 | Method and apparatus for correcting a pressure measurement for the influence of temperature | Michel Berard, Yoshinobu Jinzaki, Isabelle Dubourg | 1995-02-28 |
| 5304494 | Method of analyzing hydrocarbon oil mixtures using gel-permeation chromatography | — | 1994-04-19 |