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Expired Canadian patentCanada

Process for producing linear hydrocarbons with more than l8 carbon atoms

CA 1190249 A · Owner: Ruhrchemie Aktiengesellschaft · Inventors: Moraw, Klaus; Frohning, Carl-Dieter

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Abstract From the Canadian patent

of Disclosure, Waxy hydrocarhons with more than 18 carbon atoms are obtained by converting carbon monoxide and hydrogen in the, presence of catalysts containing iron and in addition, a, readily reducible metal oxide a difficultly reducible metal, oxide, SiO2 and an alkali metal oxide.

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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 July 9, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 1, 1983
GrantedJuly 9, 1985
Term endedJuly 9, 2002
Patent numberCA 1190249 A
Classification (IPC)C07C9/22 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMarch 1, 1983Patent grantedJuly 9, 1985Term endedJuly 9, 2002

Sources & verification

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