| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 9 | |
| #2 | Germany | 3 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Materials and metallurgy | |
| #3 | Basic materials chemistry | |
| #4 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Chemical or physical processes | |
| #2 | Non-metallic elements | |
| #3 | Separation | |
| #4 | Furnaces | |
| #5 | Phosphatic fertilisers | |
| #6 | Mixing | |
| #7 | Metal production and refining |
| # | Name | Total Patents |
|---|---|---|
| #1 | Steichen Ferdinand | 2 |
| #2 | Debaisieux Alexandre | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE933572C | Mixing device for the continuous production of superphosphate | |
| GB687741A | Apparatus for mixing a solid and a liquid | |
| DE819685C | Contact device for fluids | |
| DE848349C | Device for carrying out catalytic gas reactions |