| # | Country | Total Patents | |
|---|---|---|---|
| #1 | German Democratic Republic | 3 | |
| #2 | Germany | 3 | |
| #3 | EPO (European Patent Office) | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | Poland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Chemical engineering | |
| #3 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Air-conditioning | |
| #2 | Separation | |
| #3 | General building constructions | |
| #4 | Scaffolding | |
| #5 | Finishing work on buildings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kohnen Franz | 12 |
| #2 | Schmidt Uwe | 1 |
| #3 | Schmidt Uwe Dr Ing | 1 |
| #4 | Schmidt Uwe Dr-Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DD283441A5 | Wall element | |
| DE3834311A1 | Auxiliary device for mounting plates (panels) | |
| DE3820684A1 | WALL ELEMENT | |
| DE3817477A1 | FILTER UNIT WITH FILTER HOLDER AND FILTER CELL |