| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Basic materials chemistry | |
| #3 | Chemical engineering | |
| #4 | Consumer goods | |
| #5 | Furniture and games | |
| #6 | Weapons |
| # | Technology | |
|---|---|---|
| #1 | Non-metallic elements | |
| #2 | Brushes | |
| #3 | Gas, coke and tar production | |
| #4 | Separation | |
| #5 | Kitchen equipment | |
| #6 | Mountings for cannons and pistols | |
| #7 | Chemical or physical processes | |
| #8 | Fuels |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koch Hermann | 1 |
| #2 | Henatsch Benno | 1 |
| #3 | Scholz Alfred | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR459828A | Method and apparatus for preparing decolorizing charcoal with charcoal of any kind, or with materials containing charcoal |