Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11993921 | Cylinder, hydraulic system, construction machine and procedure | — | 2024-05-28 |
| 8590640 | Apparatus and method to maintain constant fluid circulation during drilling | — | 2013-11-26 |
| 8495930 | Power tong device | — | 2013-07-30 |
| 8453765 | Apparatus for directional control of a drilling tool | — | 2013-06-04 |
| 8450865 | Wind turbine device | — | 2013-05-28 |
| 8403035 | Sealing and anchoring device for use in a well | Frank Akselberg | 2013-03-26 |
| 8277351 | Device for an electromechanical hoisting machine, especially for use when drilling oil and gas wells | — | 2012-10-02 |
| 7954567 | Adjustable winged centering tool for use in pipes with varying diameter | — | 2011-06-07 |
| 7654344 | Torque converter for use when drilling with a rotating drill bit | Nils Reimers | 2010-02-02 |
| 7644768 | Separation device for material from a drilling rig situated on the seabed | — | 2010-01-12 |
| 7600570 | Drilling rig placed on the sea bed and equipped for drilling of oil and gas wells | — | 2009-10-13 |
| 7578360 | Dynamic damper for use in a drill string | — | 2009-08-25 |
| 7036396 | Drill pipe spinner device | Magne Moe, Jørn Pollestad | 2006-05-02 |
| 6983682 | Method and device at a hydrodynamic pump piston | — | 2006-01-10 |
| 6951331 | Sleeve valve for controlling fluid flow between a hydrocarbon reservoir and tubing in a well and method for the assembly of a sleeve valve | Rune Nilsen | 2005-10-04 |
| 6880638 | Device for an opening in an outer sleeve of a sleeve valve and a method for the assembly of a sleeve valve | Rune Nilsen | 2005-04-19 |
| 6869063 | Sleeve valve and method for its assembly | Bengt Gunnarsson, Jan Spjuth | 2005-03-22 |
| 6834889 | Torque release coupling for use in drill strings | Egil Sunde, Morten Hyvik | 2004-12-28 |
| 6516888 | Device and method for regulating fluid flow in a well | Bengt Gunnarson | 2003-02-11 |
| 6513601 | Method for setting a packer in a well bore, and a packer | Bengt Gunnarsson, Knut H. Nesland, Jone Salte | 2003-02-04 |