Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10472927 | Downhole drop plugs, downhole valves, frac tools, and related methods of use | Branko Calic | 2019-11-12 |
| 9909390 | Stage tool with lower tubing isolation | Bryce McNabb, Andrew J. Hanson, James A. MacTavish, Corey M. Kshyk | 2018-03-06 |
| 9334700 | Reverse cementing valve | Andrew J. Hanson, Randal Brent Biedemann, Damian Leonard Ward, Clayton R. Andersen | 2016-05-10 |
| 7128147 | Modular liner hanger | James F. Wilkin | 2006-10-31 |
| 6561272 | Technique for deploying a liner into a subterranean wellbore | Andrew Buzinsky | 2003-05-13 |