Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6750180 | Borehole fluid containing a lubricating composition—method for verifying the lubrification of a borehole fluid—application with respect to fluids with a high ph | André Demoulin, Annie Audibert-Hayet, Michel Janssen | 2004-06-15 |
| 6740625 | Method and fluid for checking the saturation of a formation in the immediate vicinity of a well | Annie Audibert, Daniel Longeron, Carine Dewattines, Michel Janssen | 2004-05-25 |
| 6706397 | Process for manufacturing microcapsules by interfacial polycondensation with polyoxyalkyleneamine and acid chlorides | Maria-Lidice Soto-Portas, Nathalie Zydowicz, Francoise Mechin, Angele Chomard | 2004-03-16 |