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Expired Canadian patentCanada

Smoke generator for food smoking kilns

CA 2089725 C · Owner: Blanchard, John Peter · Inventors: Blanchard, John Peter

CIPO record

Overview

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

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Abstract From the Canadian patent

The smoke generator has a pyrolysis chamber (104) an adjustable fuel supply (108, 110, 112 114) communicating with the, pyrolysis chamber for supplying combustible matter such as particulated wood at a desired rate and an adjustable air supply, (134) for supplying air at a desired rate preferably to the outlet channel (130) leading from the pyrolysis chamber rather than to the pyrolysis chamber itself. A rotatable platform (116) within the pyrolysis chamber receives the combustible matter from the fuel supply means. The fuel supply means deposits the combustible matter at a first location (116) and ash is collected at a second, location (126) remote from the first location. Preferably a …

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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 August 19, 1991 and granted September 15, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 19, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 19, 1991
GrantedSeptember 15, 1998
Term endedAugust 19, 2011
Patent numberCA 2089725 C
Classification (IPC)A23B4/05

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedAug 19, 1991Patent grantedSep 15, 1998Term endedAug 19, 2011

Sources & verification

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