| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | Finland | 2 | |
| #3 | Austria | 1 | |
| #4 | Belgium | 1 | |
| #5 | Switzerland | 1 | |
| #6 | Denmark | 1 | |
| #7 | EPO (European Patent Office) | 1 | |
| #8 | France | 1 | |
| #9 | Italy | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Blasting | |
| #2 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Brennecke Heinz | 9 |
| Publication | Filing date | Title |
|---|---|---|
| DE3207706A1 | Cyclone chamber for removal of dust | |
| DE3111581A1 | PRINT CHAMBER JET | |
| CH621079A5 | Portable sand-blasting apparatus |