| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | France | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Australia | 2 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Separating solids using liquids | |
| #2 | Elevators and escalators | |
| #3 | Separating solids | |
| #4 | Transport or storage devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Velten Hugo | 3 |
| #2 | Hugo Velten | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1646506A | Method and apparatus for separating matter of different specific gravities | |
| GB258861A | Improvements in ore dressing or like machines | |
| AU1910220B | A process and apparatus for ore dressing by means ofan ascending current | |
| GB159163A | Improvements in or relating to apparatus for separating materials of different specific gravity | |
| GB155570A | Improvements in or relating to apparatus for separating materials of different specific gravity |