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Expired Canadian patentCanada

Process for preparing and processing a resin composition

CA 1237214 A · Owner: Dsm Resins B.V. · Inventors: Rietberg, Johan; Van Der Linde, Robert

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Abstract From the Canadian patent

Resin compositions comprising two resins A and B wherein, resin A consists of the reaction product of an epoxidized fatty acid ester of a polyvalent alcohol and a monovalent carboxylic acid and resin B consists of a carboxylic acid modified fatty acid ester of a polyvalent alcohol. These resins compositions are suitable for linoleum manufacture.

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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 May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
  • 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 7, 1985
GrantedMay 24, 1988
Term endedMay 24, 2005
Patent numberCA 1237214 A
Classification (IPC)C08L63/00 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedAug 7, 1985Patent grantedMay 24, 1988Term endedMay 24, 2005

Sources & verification

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