| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 9 | |
| #2 | Denmark | 2 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | Norway | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 | |
| #6 | Finland | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Thermal processes | |
| #3 | Medical technology |
| # | Technology | |
|---|---|---|
| #1 | Finishing work on buildings | |
| #2 | Foundations and excavations | |
| #3 | Air-conditioning | |
| #4 | General building constructions | |
| #5 | Operating tables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ljungkvist Stig-Ake | 12 |
| #2 | Alfredsson Bo | 6 |
| #3 | Alfredsson B | 1 |
| Publication | Filing date | Title |
|---|---|---|
| SE9501021D0 | Device for creating a ventilatable space below a floor | |
| SE9404513D0 | Device for ventilating floor with filtering arrangement | |
| SE8901164D0 | Ventilation system for concrete floors in multi-storey house - overcomes problem with so-called liq. putty contacting casing | |
| EP0189455A1 | Device for floor ventilation. | |
| WO8504441A1 | Arrangement for improved floor ventillation and method of using the arrangement |