| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | Germany | 3 | |
| #3 | Austria | 1 | |
| #4 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Chemical engineering | |
| #3 | Environmental technology | |
| #4 | Medical technology | |
| #5 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Richard Siebenmann | 7 |
| #2 | Siebenmann Richard | 4 |
| Publication | Filing date | Title |
|---|---|---|
| CH529072A | Effluent treatment cabinet - with counterflow air which retards effluent flow to produce better contact area | |
| CH521757A | Air/gas purification plant - with wet and dry filters | |
| FR2025579A1 | Apparatus for the wet countercurrent - purification of gases waste air and/or vap |