| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 5 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | Lithuania | 1 | |
| #4 | Poland | 1 | |
| #5 | Romania | 1 | |
| #6 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Thermal processes | |
| #3 | Machine tools | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Doors and windows | |
| #2 | Air-conditioning | |
| #3 | Nails | |
| #4 | Workshop equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frehse Helmut | 6 |
| #2 | Loewel Karl | 3 |
| Publication | Filing date | Title |
|---|---|---|
| DE19646842A1 | Windows with a ventilation flap suspended in the hardware groove of the casement | |
| DE19528065A1 | Profile connector | |
| DE4442074A1 | Post, rung and cross connectors | |
| DE4332053A1 | Connection profile for sealing joints between window profile frames and window sills | |
| DE4324831A1 | Device for attaching tear lines for the miter cut to frames and in particular profile frames |