| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | Germany | 3 | |
| #3 | Spain | 3 | |
| #4 | France | 3 | |
| #5 | Belgium | 2 | |
| #6 | Italy | 2 | |
| #7 | United States | 2 | |
| #8 | United Kingdom | 1 | |
| #9 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Thermal processes | |
| #3 | Chemical engineering | |
| #4 | Machines | |
| #5 | Materials and metallurgy | |
| #6 | Packaging and shipping | |
| #7 | Medical technology | |
| #8 | Mechanical elements |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ebert P | 5 |
| #2 | Paul Ebert | 3 |
| #3 | Ebert Paul | 3 |
| #4 | Ebert Hueningen P | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3744217A | High-voltage ozone-free electrostatic air filter | |
| CH516948A | System for cleaning gases by ionization | |
| DE1778635A1 | Device for cleaning the air in rooms through ionization | |
| FR92315E | Method and device applicable to flues and ventilation systems for purifying gases and cleaning up polluted air |