| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Textiles and paper | |
| #3 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Roof coverings | |
| #2 | Paper goods | |
| #3 | Linoleum | |
| #4 | General building constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wirth Dr-Ing Hans | 5 |
| #2 | Wirth Hans Dr Ing | 3 |
| #3 | Dr Wirth Hans Ing | 2 |
| #4 | Hugo Wirth Hans | 1 |
| #5 | Breuing Wilhelm | 1 |
| #6 | Wilhelm Breuing | 1 |
| #7 | Fritz Waldmann | 1 |
| #8 | Waldmann Fritz | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE1147911B | Colored roofing felt impregnated in a known manner | |
| DE1115905B | Sealing membrane for sticking on building surfaces | |
| DE1085318B | Insulation and sealing covering for building surfaces, especially flat roofs | |
| DE1081205B | Method for insulating and watertight covering of buildings, in particular flat concrete roofs | |
| DE1082030B | Sealing of accessible building surfaces with ventilation ducts and methods for performing such a sealing |