| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Sweden | 5 | |
| #2 | United States | 4 | |
| #3 | Canada | 2 | |
| #4 | Germany | 1 | |
| #5 | Finland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Environmental technology | |
| #4 | Machine tools | |
| #5 | Engines, pumps and turbines | |
| #6 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Centrifuges | |
| #3 | Water treatment | |
| #4 | Presses | |
| #5 | Non-positive-displacement pumps | |
| #6 | Mixing | |
| #7 | Paper recycling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nilsmar Nils Olof | 4 |
| #2 | Okvist Alf Torsten | 3 |
| #3 | Nilsmar Nils O | 3 |
| #4 | Nilsmar O | 2 |
| #5 | Oekvist A | 2 |
| #6 | Okvist Alf T | 2 |
| #7 | Nilsmar N | 2 |
| #8 | Olof Nilsmar Nils | 1 |
| #9 | Nilsmar N O | 1 |
| #10 | Torsten Oekvist Alf | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4152800A | Sludge suction unit for settling basins | |
| US3563387A | Centrifugal thickener | |
| US3608733A | Centrifugal thickener | |
| US3491682A | Press concentrator | |
| CA896673A | Centrifugal thickener | |
| CA851472A | Press concentrator |