| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Domestic heating systems | |
| #2 | Climate change mitigation in buildings | |
| #3 | Solid fuel combustion | |
| #4 | Air-conditioning | |
| #5 | Cremation furnaces |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frenger Gunnar | 14 |
| #2 | Gunnar Frenger | 7 |
| #3 | Gulbrandsen Wilhelm Eugen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA400545A | Incinerator | |
| CA495317A | Heating and ventilating system | |
| CA374469A | Boiler combustion system | |
| CA466767A | Hot water boilers |