Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9587463 | Valve system | Magnar Tveiten, Erling Kleppa, Ole Sevheim | 2017-03-07 |
| 9500062 | Valve device of a wellhead Christmas tree assembly | Magnar Tveiten, Erling Kleppa | 2016-11-22 |
| 9140096 | Valve system | Magnar Tveiten, Erling Kleppa, Ole Sevheim | 2015-09-22 |
| 8701779 | Bellows valve | Erling Kleppa, Ole Sevheim | 2014-04-22 |
| 8684073 | Device for injection and stimulation of fluids in a well bore | Ole Sevheim, Erling Kleppa, Magnar Tveiten | 2014-04-01 |
| 8640776 | Fluid injection device | Magnar Tveiten, Erling Kleppa, Tom Norland | 2014-02-04 |
| 8291981 | Shear open valve | Magnar Tveiten, Erling Kleppa, Tom Norland, Ole Sevheim | 2012-10-23 |
| 8235123 | Separating device | Helge Krohn | 2012-08-07 |
| 8186440 | Fluid injection device | Magnar Tveiten, Erling Kleppa, Tom Norland | 2012-05-29 |
| 8181705 | Fluid injection device | Magnar Tveiten, Erling Kleppa, Tom Norland | 2012-05-22 |