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Expired Canadian patentCanada

Process for manufacturing moulded coke by electrical heating in a tank furnace and tank furnace for manufacturing said coke

CA 1297445 C · Owner: Rollot, Pierre Henri · Inventors: Rollot, Pierre Henri; Cordier, Jean Armand Ghislain; Dussart, Bernard Emile Andre

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Abstract From the Canadian patent

A process and a tank furnace is disclosed for manufacturing molded coke by electrical heating in a tank furnace, the process comprising introducing a first part of the fraction of the recycled gases of the top of the furnace at the base of the lower part of the furnace so as to, ensure a primary cooling of the coke; and introducing the rest of the fraction of the recycled gases of the top of the furnace in the form of a secondary cooling current circulating counter-current to the mass of coke issuing from the lower part of the furnace, in a zone connected in a sealed manner to the outlet of the lower part; thereafter withdrawing the secondary cooling current from the zone and re-introducing …

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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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 25, 1986
GrantedMarch 17, 1992
Term endedMarch 17, 2009
Patent numberCA 1297445 C
Classification (IPC)C10B53/08 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedSep 25, 1986Patent grantedMarch 17, 1992Term endedMarch 17, 2009

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