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Expired Canadian patentCanada

Circulating fluidized bed reactor with floored internal primary particle separator

CA 2284854 C · Owner: Maryamchik, Mikhail · Inventors: Alexander, Kiplin C.; Walker, David J.; Belin, Felix

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A CFB reactor or combustor having an impact type primary particle separator collects solids particles from a flow of flue gas/solids and returns the collected particles along an inclined or substantially horizontal planar floor to a bottom portion of the reactor or combustor for subsequent recirculation.

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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 5, 1999 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 5, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 5, 1999
GrantedSeptember 9, 2003
Term endedOctober 5, 2019
Patent numberCA 2284854 C
Classification (IPC)B01J8/24 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedOct 5, 1999Patent grantedSep 9, 2003Term endedOct 5, 2019

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.