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Expired Canadian patentCanada

Fischer-tropsch conversion of synthesis gas to hydrocarbons

CA 1266491 C · Owner: Brophy, John Howard · Inventors: Teleford, Clive David; Brophy, John Howard; Font Freide, Josephus Johannes Helena Maria

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Hydrocarbons are produced by contacting a gaseous mixture comprising carbon monoxide, hydrogen and at least one unsaturated hydrocarbon, the unsaturated hydrocarbon being present in an amount less than 50% molar, with a Fischer-Tropsch catalyst under Fischer-Tropsch conditions.

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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 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 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 1, 1986
GrantedMarch 6, 1990
Term endedMarch 6, 2007
Patent numberCA 1266491 C
Classification (IPC)C07C1/06 +2 more

Timeline

Timeline From CIPO dates

1987199019931996199920022005Application filedApril 1, 1986Patent grantedMarch 6, 1990Term endedMarch 6, 2007

Sources & verification

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