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Expired Canadian patentCanada

Hydrogenation of cyclopentadiene

CA 1099298 A · Owner: The Goodyear Tire & Rubber Company · Inventors: Wideman, Lawson G.

CIPO record

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Abstract From the Canadian patent

INVENTOR: Lawson G Wideman, INVENTION: HYDROGENATION OF CYCLOPENTADIENE 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 an alcohol boiling above 99°C. is employed in the reaction mixture.

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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 April 14, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 1998.
  • 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 22, 1978
GrantedApril 14, 1981
Term endedApril 14, 1998
Patent numberCA 1099298 A
Classification (IPC)C07C13/12 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedAug 22, 1978Patent grantedApril 14, 1981Term endedApril 14, 1998

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