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Expired Canadian patentCanada

Multiple layer film and containers made therefrom

CA 1315659 C · Owner: American National Can Company · Inventors: Starczewski, John F.; Jesse, Jerry F.; Hsu, Joseph C.

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Abstract From the Canadian patent

Multiple layer films and containers. The films have a first layer of either nylon or a combination of nylon with nylon wherein the melting point temperature of the combination is greater than the melting point temperature of the corresponding nylon. A second layer is comprised of linear low density polyethylene, and 0% to 40% low density polyethylene. A third adhesive layer is disposed between the first and second layers. The containers are susceptible of being sealed with included gas at low pressure and subse-, quently boiled in water without rupture of the seals. The film is preferably coextruded from tubular die thereby, setting forth a new method for forming a multiple layer film …

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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 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 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.
FiledJuly 26, 1988
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315659 C
Classification (IPC)B32B27/08 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 26, 1988Patent grantedApril 6, 1993Term endedApril 6, 2010

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