| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 5 | |
| #2 | United States | 4 | |
| #3 | Germany | 3 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | Australia | 1 | |
| #6 | Canada | 1 | |
| #7 | Finland | 1 | |
| #8 | Japan | 1 | |
| #9 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Cyclones | |
| #2 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bielefeldt Ernst-August | 7 |
| #2 | Bielefeldt Ernst August | 5 |
| #3 | Bielefeldt Ernst-August Dipl-I | 5 |
| #4 | Bielefeldt Ernst-August Dipl I | 2 |
| Publication | Filing date | Title |
|---|---|---|
| DE19502202A1 | Process and device for centrifugal separation | |
| EP0622123A1 | Apparatus for dedusting dustladen gases | |
| DE4010238A1 | Cyclone-type separator system - has annular passages round tubes at end walls and forming cyclone housing | |
| DE3615747A1 | METHOD FOR SEPARATING AND / OR SEPARATING SOLID AND / OR LIQUID PARTICLES WITH A SPIRAL CHAMBER SEPARATOR WITH A SUBMERSIBLE TUBE AND SPIRAL CHAMBER SEPARATOR FOR CARRYING OUT THE METHOD |