Issued Patents All Time
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 | Jean-Francois Argillier, Annie Audibert-Hayet, Michel Janssen | 2004-06-15 |
| 6537951 | Fluid and method for releasing tubular elements stuck in a well | Jean-Francois Argillier, Annie Audibert-Hayet, Michel Janssen | 2003-03-25 |
| 6224783 | Lubricating compound for refrigeration compressors | Herve Hinnekens | 2001-05-01 |