| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 11 | |
| #2 | Australia | 4 | |
| #3 | WIPO (World Intellectual Property Organization) | 4 | |
| #4 | United Kingdom | 3 | |
| #5 | United States | 3 | |
| #6 | Canada | 2 | |
| #7 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Basic materials chemistry | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Materials for miscellaneous applications | |
| #3 | Analysing materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Vestavik Ola Michael | 10 |
| #2 | Ekrann Steinar | 4 |
| #3 | Fidtje Torbjoern H | 3 |
| #4 | Kyllingstad Aage | 2 |
| #5 | Hanssen Jan Erik | 2 |
| #6 | Stavland Arne | 1 |
| #7 | Halsey George | 1 |
| #8 | Steinar Ekrann | 1 |
| #9 | Oppen Eirik | 1 |
| #10 | Fidtje Torbjorn H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA2304732A1 | Blowout preventer | |
| WO9949180A1 | Blowout preventer | |
| GB9720666D0 | A method and a device for directional drilling | |
| AU7468994A | A method and an apparatus for measuring density and pressure drop in a flowing fluid | |
| AU5720994A | A device for drilling holes in the crust of the earth, especially for drilling oil wells | |
| GB8819531D0 | A method for establishing effective barriers to production of undesired fluids in the recovery of oil |