| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 5 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 | |
| #3 | Canada | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Unsgaard Tom | 12 |
| #2 | Eversen Steffen | 5 |
| #3 | Evertsen Olav | 2 |
| #4 | Evertsen Steffen | 2 |
| Publication | Filing date | Title |
|---|---|---|
| WO2008085057A1 | Dual directional downhole overpressure valve | |
| US2008173446A1 | Method and device for fluid displacement | |
| WO2006043823A1 | A well pump device | |
| WO2005033471A1 | A feed pump for a sand removal apparatus in an underground well |