Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10180062 | Gas extraction calibration system and methods | Mark D. Pickell, Doug Law, Wilfred Ovedhe | 2019-01-15 |
| 8656993 | Measuring gas losses at a rig surface circulation system | — | 2014-02-25 |
| 7658094 | Sheet-form membrane sample probe, method and apparatus for fluid concentration analysis | Darrell A. Norquay, Bruce William | 2010-02-09 |
| 7111503 | Sheet-form membrane sample probe, method and apparatus for fluid concentration analysis | Darrell A. Norquay, W. Bruce Williams | 2006-09-26 |
| 6974705 | Method for determining the concentration of gas in a liquid | Darrell A. Norquay | 2005-12-13 |