| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Materials and metallurgy | |
| #3 | Environmental technology | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Chemical or physical processes | |
| #2 | Separation | |
| #3 | Water treatment | |
| #4 | Non-metallic elements | |
| #5 | Preheating for stem generation |
| Publication | Filing date | Title |
|---|---|---|
| GB231456A | Improved process for the treatment of liquids such as water by base exchange |