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Expired Canadian patentCanada

Thermoplastic resin composition comprising a rubber modified copolymer

CA 1235834 A · Owner: Sumitomo Naugatuck Co. Ltd. · Inventors: Sakano, Hajime; Yano, Motoichi; Honda, Yasuhiro

CIPO record

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Abstract From the Canadian patent

The invention provides a thermoplastic resin composition which can be molded to produce a delustered shaped article, which comprises (A) a rubber-modified copolymer and (B) an epoxy group-containing olefin polymer or an unsaturated carboxylic acid-modified olefin polymer (B'). The composition retains the desirable physical properties of the rubber-modified copolymer while producing an article having a delustered (low gloss) surface of attractive appearance.

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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 26, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 26, 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.
FiledNovember 10, 1983
GrantedApril 26, 1988
Term endedApril 26, 2005
Patent numberCA 1235834 A
Classification (IPC)B60R13/00 +2 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedNov 10, 1983Patent grantedApril 26, 1988Term endedApril 26, 2005

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