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Expired Canadian patentCanada

Fluidised bed

CA 1094802 A · Owner: Apollo Heat Limited · Inventors: Harding, Brian

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

This invention relates to a fluidised bed which may be used as a heating medium or as heat treatment apparatus for components which in use would be immersed in the bed the invention consisting, of a fluidised bed which comprises a container having a porous base and containing a mass of refractory particles conduit means, below the porous base for supplying to the underside thereof a non-stoichiometric gas/air mixture which will flow through the porous base into the mass of refractory particles and further, conduit means disposed in or insertable into the refractory particles at a position above and spaced from the porous base the further, conduit means being connectible to a supply of air …

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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

  • Granted February 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 3, 1998.
  • 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 30, 1977
GrantedFebruary 3, 1981
Term endedFebruary 3, 1998
Patent numberCA 1094802 A
Classification (IPC)F26B17/00 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedAug 30, 1977Patent grantedFeb 3, 1981Term endedFeb 3, 1998

Sources & verification

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