Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9587463 | Valve system | Erling Kleppa, Øyvind Stokka, Ole Sevheim | 2017-03-07 |
| 9580991 | Shear valve | Kristian Harestad, Helge Skorve | 2017-02-28 |
| 9500062 | Valve device of a wellhead Christmas tree assembly | Erling Kleppa, Øyvind Stokka | 2016-11-22 |
| 9140096 | Valve system | Erling Kleppa, Øyvind Stokka, Ole Sevheim | 2015-09-22 |
| 8684073 | Device for injection and stimulation of fluids in a well bore | Ole Sevheim, Øyvind Stokka, Erling Kleppa | 2014-04-01 |
| 8640776 | Fluid injection device | Øyvind Stokka, Erling Kleppa, Tom Norland | 2014-02-04 |
| 8291981 | Shear open valve | Øyvind Stokka, Erling Kleppa, Tom Norland, Ole Sevheim | 2012-10-23 |
| 8186440 | Fluid injection device | Øyvind Stokka, Erling Kleppa, Tom Norland | 2012-05-29 |
| 8181705 | Fluid injection device | Øyvind Stokka, Erling Kleppa, Tom Norland | 2012-05-22 |
| 8136601 | Power lift generator | David Hutchinson, Egil Josefsen, Kristian Harestad | 2012-03-20 |
| 7147788 | Separating a hydrocarbon production stream into its oil, water and particle constituents | — | 2006-12-12 |