Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7229399 | Screw conveyor for a decanter centrifuge | Rolf Ridderstrale, Robert Geiding, Kasper Höglund | 2007-06-12 |
| 6955637 | Separation device having a centrifugal rotor | Jesus R. Montano, Rolf Ridderstrale | 2005-10-18 |
| 6802804 | Method and a device for separation of a surface layer of a liquid body | — | 2004-10-12 |
| 6716153 | Centrifugal separator for separating solids from a liquid mixture centrally fed through a gear device | Rolf Ridderstrale | 2004-04-06 |
| 6712751 | Centrifugal separator for separating solids from a liquid mixture centrally fed through a gear device | Rolf Ridderstrale | 2004-03-30 |
| 6537191 | Centrifugal separator | Rolf Ridderstrale | 2003-03-25 |
| 5941811 | Centrifugal separator to free a liquid from both lighter particles and heavier particles | Rolf Ridderstrale | 1999-08-24 |
| 5897484 | Centrifugal separator to free a liquid from bath lighter particles and heavier particles | Rolf Ridderstrale | 1999-04-27 |
| 5186708 | Centrifugal separator having a rotor body with a movable wall | Rolf Ridderstrale | 1993-02-16 |
| 4930412 | Centrifugal separator | — | 1990-06-05 |
| 4915682 | Centrifugal separator | — | 1990-04-10 |
| 4698053 | Centrifugal separator | — | 1987-10-06 |
| 4643708 | Centrifuge operating system | Bengt Gustafsson | 1987-02-17 |
| 4636319 | Maintaining closing-liquid level in centrifuges, for operating slide valves | — | 1987-01-13 |
| 4410318 | Method and arrangement to watch over separated sediment, which is thrown out through nozzles of a centrifugal separator | Johan Bjork, Kaj Lindfors | 1983-10-18 |
| 4354632 | Operating system for centrifuges | — | 1982-10-19 |
| 4191325 | Centrifuge with sludge outlets at rotor periphery | Torbjorn Winberg, Kaj Lindfors | 1980-03-04 |