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Expired Canadian patentCanada

Process for the denitrogenation of nitrogen- containing hydrocarbon compounds

CA 1263333 C · Owner: Exxon Research And Engineering Company · Inventors: Hudson, Carl W.

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Abstract From the Canadian patent

A feed comprising a nitrogen-containing hydrocarbon compound, or compound containing a carbonnitrogen bond, is contacted in the presence of hydrogen over a catalyst comprising elemental iron preferably a, fused iron, and one or more alkali or alkaline-earth metals components (possibly with a Group III metal promoter in addition) at reaction conditions sufficient to cleave said carbon-nitrogen bond and denitrogenate said nitrogen-containing hydrocarbon compound or, compounds. Where the compound is an aromatic heterocyclic nitrogen-containing hydrocarbon or, hydrocarbons, containing at least one aryl carbonnitrogen bond, or feedstock containing such hydrocarbon, or hydrocarbons, the aryl …

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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 November 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 28, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 12, 1986
GrantedNovember 28, 1989
Term endedNovember 28, 2006
Patent numberCA 1263333 C
Classification (IPC)C10G45/04 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedFeb 12, 1986Patent grantedNov 28, 1989Term endedNov 28, 2006

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