| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 5 | |
| #2 | Austria | 2 | |
| #3 | Switzerland | 2 | |
| #4 | United States | 2 | |
| #5 | Belgium | 1 | |
| #6 | Canada | 1 | |
| #7 | Spain | 1 | |
| #8 | France | 1 | |
| #9 | Greece | 1 | |
| #10 | Italy | 1 | |
| #11 | Netherlands | 1 | |
| #12 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering | |
| #3 | Medical technology | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Separation | |
| #3 | Steam generation | |
| #4 | Object sterilising |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hildebrand Karl Heinz | 5 |
| #2 | Hildebrand Karl-Heinz | 3 |
| #3 | Heinz Hildebrand Karl | 2 |
| #4 | Karl-Heinz Hildebrand | 2 |
| #5 | Hildebrand K-H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2413243A1 | Mobile disinfectant installation for sewage from e.g. aircraft - using pumps driven by vehicle engine to circulate and ventilate sewage | |
| US3883432A | System for purifying and disinfecting waste water | |
| DE2240140A1 | Waste water disinfection plant - using high pressure chemical disinfectant and air injection | |
| ES393614A1 | System for cleaning and disinfecting waste water | |
| US3480543A | Process and apparatus for disinfection of sewage |