| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 4 | |
| #2 | Switzerland | 4 | |
| #3 | France | 4 | |
| #4 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering | |
| #3 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Separation | |
| #3 | Climate change mitigation in wastewater treatment | |
| #4 | Domestic stoves for solid fuels |
| # | Name | Total Patents |
|---|---|---|
| #1 | Haftung Gesellschaft Fuer Abwa | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB190920179A | An Improved Process for Separating Light or Floating Substances from Effluents and Apparatus therefor. | |
| GB190500544A | Improvements in Apparatus for Separating Mud or Solid Matter from Sludge or Drain Water in a Practically Dry Condition. |