| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 12 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Agriculture | |
| #3 | Chemical engineering | |
| #4 | Environmental technology | |
| #5 | Engines, pumps and turbines | |
| #6 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Milling | |
| #2 | Preparing grain for milling | |
| #3 | Mixing | |
| #4 | Reduction of greenhouse gas emissions | |
| #5 | Machines for liquids | |
| #6 | Working stone | |
| #7 | Machines for making cigarettes | |
| #8 | Separating solids |
| Publication | Filing date | Title |
|---|---|---|
| DE433512C | Water wheel with cups on an endless chain |