| # | Country | Total Patents | |
|---|---|---|---|
| #1 | EPO (European Patent Office) | 10 | |
| #2 | Canada | 2 | |
| #3 | Czechia | 2 | |
| #4 | Hungary | 2 | |
| #5 | United States | 2 | |
| #6 | Australia | 1 | |
| #7 | Bulgaria | 1 | |
| #8 | Brazil | 1 | |
| #9 | German Democratic Republic | 1 | |
| #10 | Germany | 1 | |
| #11 | Denmark | 1 | |
| #12 | Finland | 1 | |
| #13 | Republic of Korea | 1 | |
| #14 | Norway | 1 | |
| #15 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #16 | WIPO (World Intellectual Property Organization) | 1 | |
| #17 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Presses | |
| #3 | Mixing | |
| #4 | Drying solid materials by removing liquid |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kupka Dieter | 22 |
| #2 | Kupka Martin | 7 |
| #3 | Kupka Diter | 1 |
| #4 | Kupka Dieter Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP0951930A1 | Apparatus for separating solids from a slurry | |
| EP0577854A1 | Filter device | |
| EP0324865A1 | Filterpress | |
| EP0324866A1 | Rotor for a filter press | |
| EP0305576A1 | Stirrer for an industriel mixing machine | |
| EP0305575A1 | Filtering apparatus | |
| US4781828A | Filter press with rotor disks | |
| EP0226659A1 | Filter press | |
| EP0213214A1 | Agitator | |
| DE3426527A1 | CHAMBER FILTER PRESS |