| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 5 | |
| #2 | Germany | 4 | |
| #3 | Finland | 4 | |
| #4 | Australia | 3 | |
| #5 | Denmark | 2 | |
| #6 | Norway | 2 | |
| #7 | United States | 2 | |
| #8 | WIPO (World Intellectual Property Organization) | 2 | |
| #9 | Japan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Indexing scheme relating to hinges | |
| #2 | Hinges for doors or windows | |
| #3 | Doors and windows | |
| #4 | Unspecified technologies | |
| #5 | Wing fittings | |
| #6 | Separation | |
| #7 | Centrifuges |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hamacher Walter | 25 |
| #2 | Pelzer Rudolf | 3 |
| Publication | Filing date | Title |
|---|---|---|
| DE3918991A1 | DOOR LOCKING DEVICE FOR A SWING WING | |
| AU2932589A | Sliding door installation | |
| DE3824643A1 | Door-closure device for swing leaves | |
| DE3802113A1 | SLIDING DOOR | |
| DK588587D0 | Hængerullevæg | |
| US4773465A | Sliding door with folding panel | |
| DE3700581A1 | ROTOR FOR CENTRIFUGAL SEPARATOR FOR DEGASSING LIQUIDS | |
| EP0166811A1 | Fittings for sliding wings |