| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | Austria | 2 | |
| #3 | Canada | 1 | |
| #4 | France | 1 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Medical technology | |
| #3 | Materials and metallurgy | |
| #4 | Chemical engineering | |
| #5 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Mining | |
| #2 | Dredging | |
| #3 | Implantable devices | |
| #4 | Metal production and refining | |
| #5 | Separating solids using liquids | |
| #6 | Sanitary equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walz Alfons | 11 |
| Publication | Filing date | Title |
|---|---|---|
| DE19634710A1 | Device and method for extracting metals and / or valuable ores or minerals | |
| DE3023931A1 | Gold dust-extracting installation - uses flushing by turbulent motion from bottom to overflow at top fitted with mercury covered baffles | |
| DE2439752A1 | Sea-bed mining machine with bucket chain - strand threads linked by crossbar connectors to form ladder system |