| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 4 | |
| #2 | Spain | 4 | |
| #3 | Greece | 4 | |
| #4 | Portugal | 4 | |
| #5 | Turkey | 3 | |
| #6 | Australia | 2 | |
| #7 | Ireland | 2 | |
| #8 | Argentina | 1 | |
| #9 | Czechoslovakia | 1 | |
| #10 | Czechia | 1 | |
| #11 | Egypt | 1 | |
| #12 | Israel | 1 | |
| #13 | India | 1 | |
| #14 | Italy | 1 | |
| #15 | Malawi | 1 | |
| #16 | Mexico | 1 | |
| #17 | African Intellectual Property Organization | 1 | |
| #18 | Philippines | 1 | |
| #19 | Romania | 1 | |
| #20 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Chemical engineering | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Climate change mitigation in wastewater treatment | |
| #2 | Water treatment | |
| #3 | Mixing | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stahler Theo | 13 |
| #2 | Scheibinger Ludwig | 4 |
| #3 | Randolph Volker | 4 |
| #4 | Theo Stahler | 2 |
| #5 | Spanich Bruno | 2 |
| #6 | Staehler Theo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| AU1546097A | Process for the thoroughgoing aerobic biological purification of waste water | |
| IE822352L | Clarification appratus having at least one rotating¹immersion member | |
| MW2180A1 | Apparatus for the conversion of pollutants contained in effluents and effluent sludges | |
| PH21502A | Device for aerating sewage or sewage sludges |