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Expired Canadian patentCanada

Method of extracting hydrocarbons from oil-containing rock or sand through hydrogenating low temperature carbonization

CA 1214743 A · Owner: Kraftwerk Union Aktiengesellschaft · Inventors: Hoffmann, Rainer; Brunner, Gerd; Kunstle, Konrad

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Abstract From the Canadian patent

Method of extracting liquid hydrocarbons from oil-containing stone or sand, wherein the oil-containing stone or the oil-containing sand undergoes hydrogenating low temperature, carbonization in a reactor at temperatures of 450 to 520°C and a pressure of approximately 50 bar through the action of carbon monoxide, hydrogen and steam, and wherein the hydrocarbons are separated from the resulting gaseous, low temperature carbonization mixture. The low temperature carbonization mixture from the reactor is cooled in a first separation stage to a temperature of approximately 350°C to condense the less volatile hydrocarbons. The separated, liquid phase is fed to a solids separator and placed in …

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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 December 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 2, 2003.
  • 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 28, 1983
GrantedDecember 2, 1986
Term endedDecember 2, 2003
Patent numberCA 1214743 A
Classification (IPC)C10B53/06 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedSep 28, 1983Patent grantedDec 2, 1986Term endedDec 2, 2003

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