| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 7 | |
| #2 | Germany | 4 | |
| #3 | France | 3 | |
| #4 | United Kingdom | 2 | |
| #5 | Sweden | 2 | |
| #6 | Netherlands | 1 | |
| #7 | Norway | 1 |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Shafts | |
| #3 | Frames | |
| #4 | Lighting device details | |
| #5 | Building materials | |
| #6 | Pipes | |
| #7 | Pumps | |
| #8 | Transport or storage devices | |
| #9 | Venting or aerating devices | |
| #10 | Climate change mitigation in wastewater treatment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walther Peter Anton | 3 |
| #2 | Walther P A | 2 |
| #3 | Walther Peter Anton Ing | 2 |
| #4 | Glatt Hans Dieter | 1 |
| #5 | Walther Peter A | 1 |
| #6 | Walther Anton Peter Ing | 1 |
| #7 | Glatt Hans-Dieter | 1 |
| #8 | Glatt Hans-Dieter Ing | 1 |
| #9 | Glatt Dieter Hans Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2840451A1 | AXIAL SCREW CONVEYOR | |
| ATA740177A | Device for introducing gases in liquids | |
| ATA740277A | Filter | |
| DE2744647A1 | Valve with plate closure slidable across flow passage - has annular bag carried in recess of passage and inflatable to seal closure (OE 15.3.78) | |
| ATA638976A | MULTIPLE JOINT ARM |