| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | Austria | 1 | |
| #3 | Switzerland | 1 | |
| #4 | France | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Thermal processes | |
| #3 | Materials and metallurgy | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Drying solid materials by removing liquid | |
| #2 | Furnaces | |
| #3 | Building materials | |
| #4 | Finishing textile fabrics | |
| #5 | Milling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gesellschaft Neuwerk Maschinen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE384826C | Ring mill | |
| DE385713C | Ring-shaped sealing device for rotary tube furnaces | |
| DE398055C | Rotary kiln | |
| GB173234A | Tunnel drier with air circulation | |
| DE321852C | Device for automatic switching of the air flaps in multi-chamber drying systems | |
| DE398571C | Rotary kiln | |
| DE456403C | Rotatable, internally and externally heated drum dryer | |
| DE398572C | Rotary kiln | |
| DE444514C | Fabric tensioning device for embroidery thread cutting machines | |
| DE456740C | Drying drum with external and internal heating |