Issued Patents All Time
Showing 26–42 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7600565 | Downhole trigger apparatus | — | 2009-10-13 |
| 7597139 | Downhole trigger apparatus | — | 2009-10-06 |
| 7546871 | Downhole tool | — | 2009-06-16 |
| 7395877 | Apparatus and method to reduce fluid pressure in a wellbore | David Hosie, R. K. Bansal | 2008-07-08 |
| 7316271 | Deformable member | — | 2008-01-08 |
| 7311148 | Methods and apparatus for wellbore construction and completion | Richard L. Giroux, Gregory G. Galloway, David J. Brunnert, Patrick Maguire, Tuong Thanh Le +5 more | 2007-12-25 |
| 7134506 | Deformable member | — | 2006-11-14 |
| 7111692 | Apparatus and method to reduce fluid pressure in a wellbore | David Hosie, R. K. Bansal | 2006-09-26 |
| 7066247 | Methods and apparatus for drilling with a multiphase pump | Bryan V. Butler, Gregory H. Chitty, Darcy Nott, Jeffrey Charles Saponja | 2006-06-27 |
| 6968911 | Apparatus and methods for drilling | — | 2005-11-29 |
| 6966367 | Methods and apparatus for drilling with a multiphase pump | Bryan V. Butler, Gregory H. Chitty, Darcy Nott, Jeffrey Charles Saponja | 2005-11-22 |
| 6896049 | Deformable member | — | 2005-05-24 |
| 6837313 | Apparatus and method to reduce fluid pressure in a wellbore | David Hosie, Ramkumar K. Bansal | 2005-01-04 |
| 6719071 | Apparatus and methods for drilling | — | 2004-04-13 |
| 6223824 | Downhole apparatus | — | 2001-05-01 |
| 6125930 | Downhole valve | — | 2000-10-03 |
| 5636661 | Self-piloting check valve | — | 1997-06-10 |