Centrifugal separator in pressure vessel
CA 2176944 C · Owner: A. Ahlstrom Corporation · Inventors: Hyppanen, Timo; Eriksson, Timo; Provol, Steven
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pressurized fluidized bed reactor is provided utilizing a centrifugal separator having a gas space that is distinctly noncircular preferably having, a circularity of greater than or equal to 1.15. Most desirably the cyclone has a quadrate (e.g. square) cross section and is disposed inside the pressure vessel along With the reactor chamber containing the fluidized bed. A number of ceramiccandle or honeycomb filters may be provided connected to the gas outlet from thecyclone separator within the pressure vessel, to filter the gas. This construction provides a minimized diameter of the pressure vessel because the reactor chamberwith square cyclones is more compact than if conventional …
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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 December 9, 1994 and granted November 9, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 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.