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Expired Canadian patentCanada

Hydrogenation process

CA 1092614 A · Owner: The Goodyear Tire & Rubber Company · Inventors: Ofstead, Eilert A.; Wideman, Lawson G.

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Abstract From the Canadian patent

INVENTORS. Lawson G. Wideman and Eilert A. Ofstead INVENTION: HYDROGENATION PROCESS, Abstract of the Invention There is disclosed a process for the preparation of cyclopentene which comprises selectively hydrogenating cyclopentadiene in the liquid phase by contacting cyclopentadiene with hydrogen in the presence of a hydrogenation catalyst comprising a highly dispersed form of nickel in which water is employed in the reaction medium.

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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 December 30, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 30, 1997.
  • 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 23, 1978
GrantedDecember 30, 1980
Term endedDecember 30, 1997
Patent numberCA 1092614 A
Classification (IPC)C07C13/12 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedAug 23, 1978Patent grantedDec 30, 1980Term endedDec 30, 1997

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