| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 3 | |
| #2 | Sweden | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Australia | 2 | |
| #5 | Norway | 2 | |
| #6 | Poland | 2 | |
| #7 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Environmental technology | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Reduction of greenhouse gas emissions | |
| #3 | Geothermal collectors | |
| #4 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Alexandersson Hans | 17 |
| #2 | Nelson Anders | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2009044958A1 | Sealing device | |
| AU3061799A | Sealing for energy wells | |
| AU2751899A | Safety seal for wells | |
| SE9401112D0 | Arrangement with energy well | |
| EP0629259A1 | A method and a device for sealing between a casing and a drill hole in rock drilling operations |