| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 15 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Testing of structures | |
| #3 | Pipe-line systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wirfalk Arnold | 15 |
| Publication | Filing date | Title |
|---|---|---|
| SE0100794D0 | Spacing alarm wires apart in splices between insulated pipeline sections, using spacer element in contact with pipe and ends of insulation material | |
| SE8405288D0 | Monitoring remote heating conduits | |
| SE8106510L | An arrangement for the watertight insertion of pipes |