| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 5 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | Brazil | 1 | |
| #4 | China | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology | |
| #3 | Agriculture | |
| #4 | Machines | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Rotary-pistons | |
| #2 | Milling | |
| #3 | Planting | |
| #4 | Water treatment | |
| #5 | Rotary pistons | |
| #6 | Sewers | |
| #7 | Climate change mitigation in wastewater treatment | |
| #8 | Animal care |
| # | Name | Total Patents |
|---|---|---|
| #1 | Langer Gerd | 6 |
| #2 | Langer Paul G | 3 |
| #3 | Gerd Langer | 1 |
| #4 | Langer Paul Gerhard | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE102006041633A1 | pump | |
| DE4121684A1 | pump | |
| DE4115069A1 | Device for crushing fibrous components in a biological matrix | |
| DE3408871A1 | Cast-iron covering grating for liquid-manure channels in cattle stalls | |
| DE3405509A1 | Positive displacement pump |