Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6336796 | Progressive-cavity pump with composite stator and manufacturing process | Eric Vandenbroucke | 2002-01-08 |
| 5829529 | Method and device for producing by pumping in a horizontal drain hole | Christian Wittrisch, Jack Bootsman | 1998-11-03 |
| 5667369 | Volumetric pump driven by a continuous tube | — | 1997-09-16 |
| 5562433 | Pumping system comprising a high-capacity positive-displacement pump | Herve Petit | 1996-10-08 |
| 5348094 | Device and method for pumping a viscous liquid comprising injecting a thinning product, application to horizontal wells | Jacques Lessi | 1994-09-20 |
| 5320500 | Continuous mixing device, method and use in an installation for pumping a high viscosity fluid | — | 1994-06-14 |
| 5280825 | Device and installation for the cleaning of drains, particularly in a petroleum production well | — | 1994-01-25 |
| 5113937 | Device for separating a mixture of free gas and liquid at the intake of a pump at the bottom of a drilled well | — | 1992-05-19 |
| 5086842 | Device and installation for the cleaning of drains, particularly in a petroleum production well | — | 1992-02-11 |
| 4957161 | Device for pumping a fluid at the bottom of a well | Edmond Chanton | 1990-09-18 |
| 4886131 | Inclined-jet drilling tool | Christian Bardin | 1989-12-12 |
| 4738320 | Method and improvement to drilling tools allowing great efficiency in cleaning the cutting face | Christian Bardin | 1988-04-19 |
| 4733734 | Method and improvement to drilling tools comprising water passages providing great efficiency in cleaning the cutting face | Christian Bardin | 1988-03-29 |
| 4718824 | Usable device, in particular for the pumping of an extremely viscous fluid and/or containing a sizeable proportion of gas, particularly for petrol production | Francois-Jean Trocqueme, Jean Garraux | 1988-01-12 |
| 4378051 | Driving device for displacing an element in a conduit filled with liquid | Robert Desbrandes, Guy Norel | 1983-03-29 |
| 4245708 | Blade stabilizer provided with at least one fluid passage having a venturi effect, in particular for use in combination with a drill bit | Jean Boulet | 1981-01-20 |
| 4240513 | Drill bit with suction jet means | Yvon Castel | 1980-12-23 |
| 4239087 | Drill bit with suction jet means | Yvon Castel | 1980-12-16 |
| 4222447 | Drill bit with suction jets | — | 1980-09-16 |