Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11680454 | Method of plugging and pressure testing a well | Gjermund Grimsbo, Pål Viggo Hemmingsen, Halvor Kjørholt | 2023-06-20 |
| 11274515 | Method of plugging and pressure testing a well | Gjermund Grimsbo, Pål Viggo Hemmingsen, Halvor Kjørholt | 2022-03-15 |
| 10392885 | Method and apparatus for plugging a well | Gjermund Grimsbo, Halvor Kjørholt, Pål Viggo Hemmingsen | 2019-08-27 |
| 9822632 | Method of pressure testing a plugged well | Halvor Kjørholt | 2017-11-21 |
| 9714555 | Method of plugging a well | Halvor Kjørholt | 2017-07-25 |