| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Brazil | 3 | |
| #3 | Canada | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 3 | |
| #5 | EPO (European Patent Office) | 2 | |
| #6 | United Kingdom | 2 | |
| #7 | Norway | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rudshaug Bjorn | 5 |
| #2 | Rudshaug Bjoern | 5 |
| #3 | Haverstad Dag | 5 |
| #4 | Stensland Eivind Gimming | 5 |
| #5 | Haaverstad Dag | 4 |
| #6 | Slettedal Per | 3 |
| #7 | Egeland Terje | 3 |
| #8 | Verstad Dag H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2009235786A1 | Power tong | |
| US2009084537A1 | Top drive drilling apparatus | |
| US2006174729A1 | Rotation unit for torque tong comprising a gripping cylinder |