Centrifugal separator and method
CA 2174626 C · Owner: Collier, Kevin E. · Inventors: Rogers, Ernest E.; Collier, Kevin E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A separator (222) for separating a first fluid of less density from a second fluid of greater density through rotation about an axis of rotation (292). The separator includes a separator chamber (350) mounted for rotation about the axis of rotation. A first weir (380) is positioned in fluid communication with the separation chamber. A second weir (400) is positioned over which the second fluid may pass to exit the separation chamber through a collection chamber (488). A fluid pressure chamber is positioned radially outwardly from the crest of the second weir to receive the second fluid as it passes over the second weir. The fluid pressure chamber is partially defined by an exit weir over …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 26, 1994 and granted March 30, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.