| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Finland | 2 | |
| #2 | United Kingdom | 2 | |
| #3 | Norway | 2 | |
| #4 | Sweden | 2 | |
| #5 | USSR (Union of Socialist Soviet Republics) | 2 | |
| #6 | WIPO (World Intellectual Property Organization) | 2 | |
| #7 | Austria | 1 | |
| #8 | Switzerland | 1 | |
| #9 | EPO (European Patent Office) | 1 | |
| #10 | Spain | 1 | |
| #11 | France | 1 | |
| #12 | Greece | 1 | |
| #13 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Climate change mitigation in wastewater treatment | |
| #3 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dunder Vilho | 13 |
| #2 | Dunder V | 2 |
| #3 | Dunder Vilkho | 2 |
| Publication | Filing date | Title |
|---|---|---|
| SU1540649A3 | Apparatus for separating solids from waste water | |
| CH663357A5 | Apparatus for separating solid constituents from waste water | |
| FI851369A0 | Device for purifying water, especially waste water, with a biological oxidation method and using the device for purifying gases | |
| FI840401A0 | Anordination of the aviability of fasta aemnen fraon avfallsvatten |