| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 6 | |
| #2 | United States | 3 | |
| #3 | Denmark | 1 | |
| #4 | United Kingdom | 1 | |
| #5 | Russian Federation | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Pumps | |
| #3 | Non-positive-displacement pumps | |
| #4 | Steam turbines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Andersen Gunnar | 11 |
| #2 | Vartdal Leif | 5 |
| #3 | Arlehed Petter | 5 |
| #4 | Gunnar Andersen | 2 |
| Publication | Filing date | Title |
|---|---|---|
| NO20180149A1 | Apparatus for transferring a reciprocating movement from a machinery arranged at a surface to a device located downhole in a subterranean well, and method of producing well fluids | |
| NO20120289A1 | Pump with pressure compensated annulus volume | |
| WO2011159166A1 | Ring motor pump |