| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | Hungary | 2 | |
| #3 | Poland | 2 | |
| #4 | Canada | 1 | |
| #5 | Czechia | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | United States | 1 | |
| #8 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Environmental technology | |
| #3 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Building materials | |
| #2 | Water treatment | |
| #3 | Climate change mitigation in wastewater treatment | |
| #4 | Chemical or physical processes | |
| #5 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Langfeldt Claudia | 6 |
| #2 | Kroehl Paul Bernhard | 5 |
| #3 | Schmidt Rolf | 3 |
| #4 | Kroehl Paul | 1 |
| #5 | Krohl Paul Bernhard | 1 |
| #6 | Lindner Heiko | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE19903103C1 | Water filter assembly cushioning chamber linked by filtrate pump passage, dispensing with holding tank, rinsing water pumps and collector | |
| CA2246775A1 | Method and device for heat-treating plaster | |
| DE19645331A1 | Process for extensive nitrogen elimination in a wastewater treatment plant |