Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9435162 | Method and apparatus for controlling bottom hole pressure in a subterranean formation during rig pump operation | James May | 2016-09-06 |
| 8490719 | Method and apparatus for controlling bottom hole pressure in a subterranean formation during rig pump operation | James May | 2013-07-23 |
| 7377336 | Modular pressure control and drilling waste management apparatus for subterranean borehole | Kelvin Simon, James Gharst, Paul Delahoussaye | 2008-05-27 |
| 7207399 | Modular pressure control and drilling waste management apparatus for subterranean borehole operations | James Gharst, Paul Delahoussaye, Kelvin Simon | 2007-04-24 |