| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | United Kingdom | 1 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Civil engineering | |
| #3 | Thermal processes | |
| #4 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Pig-iron processing | |
| #2 | Hydraulic engineering | |
| #3 | Details of furnaces | |
| #4 | Casting metal | |
| #5 | Furnaces | |
| #6 | Iron and steel production | |
| #7 | Chemical or physical processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rexroth Alfred | 8 |
| #2 | Alfred Rexroth | 1 |
| #3 | Stockhausen Wilhelm | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB761306A | Apparatus for injecting material into cupola furnaces | |
| US2784037A | Apparatus for shooting material into cupolas |