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Expired Canadian patentCanada

Gas circulation method for moving bed catalyst regeneration zones

CA 1265502 C · Owner: Uop Inc. · Inventors: Greenwood, Arthur Raymond

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Abstract From the Canadian patent

GAS CIRCULATION METHOD FOR MOVING BED CATALYST REGENERATION ZONES", ABSTRACT A method is disclosed for continuously regenerating particulate catalyst used in a hydrocarbon conversion process such as catalytic reforming. The method is especially applicable to a moving bed regeneration zone. The catalyst being regenerated is passed into the top of the zone and slowly moves downward as a dense bed which is contacted with different gas streams at different elevations within the regeneration zone. A key feature involves employing a portion of relatively hot combustion gas withdrawn from one portion of the zone as a heating gas stream in a different portion of the zone, with the remainder of the …

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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 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 2007.
  • 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 2, 1986
GrantedFebruary 6, 1990
Term endedFebruary 6, 2007
Patent numberCA 1265502 C
Classification (IPC)C10G35/12 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedApril 2, 1986Patent grantedFeb 6, 1990Term endedFeb 6, 2007

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