| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 3 | |
| #2 | Switzerland | 3 | |
| #3 | Germany | 3 | |
| #4 | Sweden | 3 | |
| #5 | Finland | 2 | |
| #6 | Belgium | 1 | |
| #7 | Denmark | 1 | |
| #8 | France | 1 | |
| #9 | United Kingdom | 1 | |
| #10 | Italy | 1 | |
| #11 | Norway | 1 | |
| #12 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Basic materials chemistry | |
| #3 | Chemical engineering | |
| #4 | Pharmaceuticals | |
| #5 | Thermal processes | |
| #6 | Furniture and games |
| # | Name | Total Patents |
|---|---|---|
| #1 | Romell Dag | 15 |
| #2 | Dag Romell | 2 |
| #3 | Pihl Joergen Dipl Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2500459A1 | Organic waste treatment - by heat exchange of stirred products with hot moist air from second tank | |
| CA1003240A | Method and an apparatus of rendering decay processes more effective | |
| US3892660A | Method of rendering decay processes more effective | |
| CA940838A | Electrostatic gas-scrubber | |
| GB1196171A | Gas Scrubber | |
| CA833341A | Gas scrubber |