| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 | |
| #3 | EPO (European Patent Office) | 3 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Water treatment | |
| #2 | Climate change mitigation in wastewater treatment | |
| #3 | Spraying devices | |
| #4 | Compressed gas holders |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wiederkehr Kurt | 9 |
| Publication | Filing date | Title |
|---|---|---|
| DE102005058097A1 | water | |
| WO2005040668A2 | Valve | |
| DE102004027248A1 | Method and device for treating water | |
| DE10361068A1 | Valve | |
| DE10361069A1 | Device for dispensing at least one substance |