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Expired Canadian patentCanada

Poly(arylene sulfide) composition containing an ethylene polymer

CA 1248670 A · Owner: Phillips Petroleum Company · Inventors: Wright, Roy F.

CIPO record

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Abstract From the Canadian patent

A poly(arylene sulfide) composition containing a minor amount of low-density polyethylene. In applications such as poly(arylene sulfide) reinforced molding compositions the invention composition will, generally contain a poly(phenylene sulfide) a reinforcing material such, as glass or carbon fibers and from about 0.1 to about 10 weight percent based on the weight of the composition of an ethylene polymer having a, density of from about 0.910 to about 0.940 g/cc and a melt index of greater than 100 g/10 min.

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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 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 10, 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.
FiledJanuary 4, 1985
GrantedJanuary 10, 1989
Term endedJanuary 10, 2006
Patent numberCA 1248670 A
Classification (IPC)C08L81/02 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJan 4, 1985Patent grantedJan 10, 1989Term endedJan 10, 2006

Sources & verification

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