| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 3 | |
| #2 | Canada | 2 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | Australia | 1 | |
| #6 | Brazil | 1 | |
| #7 | Czechia | 1 | |
| #8 | Finland | 1 | |
| #9 | Hungary | 1 | |
| #10 | Sweden | 1 | |
| #11 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dahlgren Finn | 14 |
| #2 | Skjaeret Finn Dahlgren | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CZ9402001A3 | Coupling for high-pressure pipes | |
| WO9119128A1 | Seal ring and use of this ring |