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Expired Canadian patentCanada

Dynamically cured thermoplastic olefin polymers

CA 1248262 A · Owner: Exxon Research And Engineering Company · Inventors: Puydak, Robert C.; Hazelton, Donald R.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Thermoplastic compositions useful as molded parts including automotive hoses and exterior body parts which exhibit good flow and good surface characteristics in injection molded parts. The compositions comprise equal proportions of a polyolefin, a halogenated butyl rubber and polychloroprene wherein the rubbers have been dynamically vulcanized to a fully cured state in the presence of the polyolefin.

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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 January 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 3, 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 29, 1985
GrantedJanuary 3, 1989
Term endedJanuary 3, 2006
Patent numberCA 1248262 A
Classification (IPC)C08L23/00 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedNov 29, 1985Patent grantedJan 3, 1989Term endedJan 3, 2006

Sources & verification

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