Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10166551 | Centrifuge machine having an improved discharge system | David Chezaud, Joël Robin, Tojonirina Randriamanantena | 2019-01-01 |
| 10092909 | Centrifugal separator with cones divided into angular sectors separated by annular gaps | David Chezaud, Joël Robin, Tojonirinia Randriamanantena | 2018-10-09 |
| 9295927 | Method and device for contacting two immiscible liquids without mixing them | Jean Duhamet, Florent Gandi, Olivier Conocar | 2016-03-29 |
| 6613720 | Delayed blending of additives in well treatment fluids | Michael D. Parris, Richard D. Hutchins, Stanley B. McConnell, Erik Nelson, Keith Ingram Dismuke | 2003-09-02 |
| 6306799 | Compositions for iron control in acid treatments for oil wells | Herve Perthuis, Philippe Dejeux | 2001-10-23 |
| 6172011 | Control of particulate flowback in subterranean wells | Roger J. Card, Paul R. Howard, Vernon G. Constien | 2001-01-09 |
| 5972849 | Process for controlling iron | Herve Perthuis, Philippe Dejeux, Pierre Maroy | 1999-10-26 |
| 5547926 | New compositions for iron control in acid treatments for oil wells | Herve Perthuis, Philippe Dejeux, Pierre Maroy | 1996-08-20 |
| 5501275 | Control of particulate flowback in subterranean wells | Roger J. Card, Paul R. Howard, Vernon G. Constien | 1996-03-26 |
| 5439055 | Control of particulate flowback in subterranean wells | Roger J. Card, Paul R. Howard | 1995-08-08 |
| 5330005 | Control of particulate flowback in subterranean wells | Roger J. Card, Paul R. Howard | 1994-07-19 |