| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 3 | |
| #2 | Netherlands | 3 | |
| #3 | United States | 3 | |
| #4 | France | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | Italy | 2 | |
| #7 | Japan | 2 | |
| #8 | Switzerland | 1 | |
| #9 | Czechoslovakia | 1 | |
| #10 | German Democratic Republic | 1 | |
| #11 | EPO (European Patent Office) | 1 | |
| #12 | Spain | 1 | |
| #13 | Sweden | 1 | |
| #14 | USSR (Union of Socialist Soviet Republics) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Magnetic or electrostatic solid separation | |
| #2 | Separation | |
| #3 | Cleaning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dorgathen Friedrich | 8 |
| #2 | Furiidoritsuhi Dorugaten | 2 |
| #3 | Dorgarten Friedrich | 1 |
| #4 | Dorgaten Fridrikh | 1 |
| #5 | Dorgathe F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4261826A | Magnet cleaning device | |
| JPS56126456A | Magnet filer mechanism | |
| DE2903178A1 | MAGNETIC FILTER SYSTEM | |
| DE2710005A1 | MAGNETIC FILTER SYSTEM | |
| DE2429849A1 | CONTINUOUS MAGNETIC FILTER SYSTEM |