| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Finland | 2 | |
| #2 | United Kingdom | 2 | |
| #3 | Austria | 1 | |
| #4 | Australia | 1 | |
| #5 | Canada | 1 | |
| #6 | Switzerland | 1 | |
| #7 | German Democratic Republic | 1 | |
| #8 | Germany | 1 | |
| #9 | Norway | 1 | |
| #10 | Sweden | 1 | |
| #11 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #12 | United States | 1 | |
| #13 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machine tools | |
| #3 | Textiles and paper | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Separating solids | |
| #2 | Separation | |
| #3 | Centrifuges | |
| #4 | Separating solids using liquids | |
| #5 | Percussive tools | |
| #6 | Treatment of paper-making materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hukki R | 2 |
| #2 | Hukki Risto Tapani | 2 |
| #3 | Hukki Risto T | 2 |
| #4 | Hukki R T | 1 |
| #5 | Khuki Risto Tapani | 1 |
| #6 | Lario Heikki Elijas | 1 |
| #7 | Juvonen Esko | 1 |
| #8 | Virtanen Pentti | 1 |
| #9 | Hukki Risto Tapani Prof | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ZA7400724B | Method and apparatus for wet fine screening | |
| AU6507774A | Wet fine screening | |
| GB1446575A | Method of and apparatus for wet screening finely divided solids | |
| US3905894A | Apparatus for wet fine screening |