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Expired Canadian patentCanada

Partially grafted thermoplastic compositions

CA 1318421 C · Owner: Saltman, Robert Philip · Inventors: Saltman, Robert Philip

CIPO record

Overview

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

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Abstract From the Canadian patent

Partially grafted flexible thermoplastic compositions formed by melt blending under high shear a thermoplastic material having available graft sites said thermoplastic material being at least one continuous phase of the composition, an ethylene copolymer containing an unsaturated mono-carboxylic acid, and a polymeric grafting agent having reactive groups capable of reacting with the mono-carboxylic acid in the ethylene copolymer and with the available graft sites in the thermoplastic material. AD-5564A 35

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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 25, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 25, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 15, 1987
GrantedMay 25, 1993
Term endedMay 25, 2010
Patent numberCA 1318421 C
Classification (IPC)C08L23/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 15, 1987Patent grantedMay 25, 1993Term endedMay 25, 2010

Sources & verification

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