| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 9 | |
| #2 | EPO (European Patent Office) | 8 | |
| #3 | WIPO (World Intellectual Property Organization) | 7 | |
| #4 | Brazil | 6 | |
| #5 | Canada | 6 | |
| #6 | Finland | 6 | |
| #7 | Norway | 6 | |
| #8 | United States | 6 | |
| #9 | Australia | 4 | |
| #10 | Czechia | 4 | |
| #11 | Poland | 4 | |
| #12 | New Zealand | 3 | |
| #13 | China | 2 | |
| #14 | Denmark | 1 | |
| #15 | France | 1 | |
| #16 | Hungary | 1 | |
| #17 | Republic of Korea | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Textiles and paper | |
| #3 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Treatment of paper-making materials | |
| #3 | Paper-making machines | |
| #4 | Crop agriculture | |
| #5 | Fibrous raw materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nilsson Harry | 73 |
| #2 | Nilsson Bjarne | 4 |
| #3 | Larsson Gunnar | 1 |
| Publication | Filing date | Title |
|---|---|---|
| PL342431A1 | Rotary filter | |
| CZ20003031A3 | Rotary filter | |
| NZ332402A | Filter sector for rotating filter with back to back plates having ridges and protrusions mutually perpendicular to direct filtrate between cloth and surface of plate | |
| CZ287695A3 | Rotary filter | |
| AU656774B2 | Beating apparatus for fibre suspensions | |
| EP0516731A1 | Disc filter | |
| CA1316838C | Thickener | |
| FI882252A0 | Filter foer concentration av suspensioner. | |
| US4529509A | Screen Machine | |
| BR8305748A | Screening machine | |
| US3704834A | Apparatus for disintegration and separation of soil and similar materials |