Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10359093 | System for controlling the movement of a load | — | 2019-07-23 |
| 10253579 | Motion compensation system for a load hanging from a mobile unit with a main cylinder and a secondary cylinder | — | 2019-04-09 |
| 7290625 | Reverse-circulation drilling method and system | Christian Wittrisch | 2007-11-06 |
| 6209664 | Device and method for controlling the trajectory of a wellbore | — | 2001-04-03 |
| 5483987 | Remote control method and device for actuating an equipment-application to a drill string | Jean Boulet | 1996-01-16 |
| 5443128 | Device for remote actuating equipment comprising delay means | — | 1995-08-22 |
| 5310012 | Actuating device associated with a drill string and comprising a hydrostatic drilling fluid circuit, actuation method and application thereof | Andre Cendre, Jean-Baptiste Fay | 1994-05-10 |
| 4989679 | Centering device that can be engaged or disengaged, specifically for a drilling assembly | — | 1991-02-05 |