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Expired Canadian patentCanada

Pulsed atmospheric fluidized bed combustor apparatus and process

CA 2108893 C · Owner: Mansour, Momtaz N. · Inventors: Mansour, Momtaz N.

CIPO record

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

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Abstract From the Canadian patent

A pulsed atmospheric fluidized bed reactor system and process for the combustion of e.g. high sulfur content coal. The, system affords an economical ecologically acceptable alternative to oil and gas fired combustors and comprises a reactor vessel (10) with a fluidized bed of solids located in the lower section (12) and a pulse combustor unit (30) extending into said vessel directing a pulsating flow on said fluidized bed. The apparatus may also be employed for endothermic reaction combustion of, waste products, e.g. organic and medical waste drying materials, heating air, calcining and the like.

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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 April 22, 1992 and granted September 30, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 22, 1992
GrantedSeptember 30, 1997
Term endedApril 22, 2012
Patent numberCA 2108893 C
Classification (IPC)B01J8/40 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedApril 22, 1992Patent grantedSep 30, 1997Term endedApril 22, 2012

Sources & verification

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