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Expired Canadian patentCanada

Shrinkable film and shrinkable articles prepared therefrom

CA 1312184 C · Owner: Toda, Hideaki · Inventors: Murakami, Yoshinaga; Toda, Hideaki; Kagawa, Seiji

CIPO record

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Abstract From the Canadian patent

Shrinkable film and articles prepared therefrom which shrink more than 5% when heated to a temperature of 50°C are disclosed. The shrinkable film is prepared by stretching a polymer film of EPDM or EPM and EVA and talc more than 1.5 times in at least one direction at specified temperatures.

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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 5, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 5, 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.
FiledJanuary 12, 1988
GrantedJanuary 5, 1993
Term endedJanuary 5, 2010
Patent numberCA 1312184 C
Classification (IPC)B29C61/00 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJan 12, 1988Patent grantedJan 5, 1993Term endedJan 5, 2010

Sources & verification

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