| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | United Kingdom | 3 | |
| #3 | Spain | 2 | |
| #4 | United States | 2 | |
| #5 | Switzerland | 1 | |
| #6 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Separating solids | |
| #2 | Milling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hanke Ernst W | 1 |
| #2 | Ernst-Walter Hanke | 1 |
| #3 | Thomas Franz | 1 |
| #4 | Pfeiffer Christian | 1 |
| #5 | Franz Thomas | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES376157A1 | Apparatus for classifying ground material | |
| GB1134666A | Device for the scattering and distribution of material to be sifted in air-circulation sifters | |
| DE462017C | Intermediate chamber for the material to be ground to pass from the pre-grinding chamber into the fine grinding chamber of multi-chamber tubular mills |