Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7900695 | Well pump device | — | 2011-03-08 |
| 7610963 | Method and device for fluid displacement | Steffen Eversen | 2009-11-03 |
| 6209636 | Wellbore primary barrier and related systems | John D. Roberts, Jan Drechsler, Tom Salversen, Eirik Enerstvedt, William A. Blizzard, Jr. +2 more | 2001-04-03 |
| 6158512 | Method and apparatus for the removal of sand in an underwater well | — | 2000-12-12 |
| 6119775 | Inflatable downhole seal | Jan Drechsler | 2000-09-19 |