Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE45641 | Mud flow back valve | Cecilie T. Misiewicz | 2015-08-04 |
| 7823645 | Downhole inflow control device with shut-off feature | Craig Coull, Erik Helsengreen | 2010-11-02 |
| 7644758 | Restrictor valve mounting for downhole screens | Martin P. Coronado, Stephen L. Crow | 2010-01-12 |
| 7413022 | Expandable flow control device | John Todd Broome | 2008-08-19 |
| 7409999 | Downhole inflow control device with shut-off feature | Craig Coull, Erik Helsengreen | 2008-08-12 |
| 7290606 | Inflow control device with passive shut-off feature | Martin P. Coronado, Steve Crow | 2007-11-06 |
| 7044236 | Shot direction indicating device | Morten Iversen, Kenneth Latveit, Kristian Vargervik, Tim V. Sampson | 2006-05-16 |
| 6976542 | Mud flow back valve | Cecilie T. Misiewicz | 2005-12-20 |
| 6702994 | Method and apparatus for production of amorphous silica from silicon and silicon containing materials | Olaf Trygve Vegge | 2004-03-09 |