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Expired Canadian patentCanada

Production of hydrocarbon liquids from solid carbonaceous materials

CA 1100532 A · Owner: Granatstein, David L. · Inventors: Phillips, Colin R.; Granatstein, David L.

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Abstract From the Canadian patent

C.R. Phillips and D.L. Granatstein, ABSTRACT OF THE DISCLOSURE Solid carbonaceous materials selected from the group consisting of glucose, lignite and cellulosic materials including wood cellulose, paper, plant matter and the cellulosic fraction of municipal solid wastes are converted to hydrocarbon liquids by heating under an atmosphere of air, in the presence of tetralin (tetrahydronaphthalene) and in the absence of a reducing gas, under autogenous pressure in a closed reactor vessel.

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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 May 5, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 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 21, 1980
GrantedMay 5, 1981
Term endedMay 5, 1998
Patent numberCA 1100532 A
Classification (IPC)C07C1/20 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Application filedAug 21, 1980Patent grantedMay 5, 1981Term endedMay 5, 1998

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