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Expired Canadian patentCanada

Process for the preparation of methanol in liquid phase

CA 1262361 C · Owner: Onsager, Olav T. · Inventors: Onsager, Olav T.; Onsager, Olav T.

CIPO record

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

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Abstract From the Canadian patent

A process for preparing methanol in a liquid reaction medium by reaction of carbon monoxide and hydrogen in the presence of a catalyst system consisting of an alkali metal alcoholate and a copper catalyst wherein, the liquid reaction medium in the reactor in addition to methanol and methyl formate contains at least 50 % by volume of a non-polar organic solvent having a dielectricity constant which is lower than that of pure methanol at the same temperature.

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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 October 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 17, 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.
FiledNovember 8, 1985
GrantedOctober 17, 1989
Term endedOctober 17, 2006
Patent numberCA 1262361 C
Classification (IPC)C07C29/15 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedNov 8, 1985Patent grantedOct 17, 1989Term endedOct 17, 2006

Sources & verification

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