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Expired Canadian patentCanada

Nylon film with improved slip characteristics and process therefor

CA 1202759 A · Owner: Du Pont Canada Inc. · Inventors: Mollison, Alistair N.

CIPO record

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Abstract From the Canadian patent

A process is disclosed for the manufacture of nylon packaging film having improved slip characteristics. In the process a homogeneous mixture is formed from a filmforming nylon resin and between 0.05 and 1.0 percent by weight thereof of a material selected from the group consistting of (1) secondary amides of the formula and (2) N, N' ethylene bis amides of the formula where R1 and R2 are aliphatic hydrocarbon chains of C14-C22 . The homogeneous mixture is then extruded into film. The nylon film having improved slip characteristics is useful for the packaging of bacon and other processed meats.

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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 8, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 29, 1982
GrantedApril 8, 1986
Term endedApril 8, 2003
Patent numberCA 1202759 A
Classification (IPC)B29D7/01 +2 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedJune 29, 1982Patent grantedApril 8, 1986Term endedApril 8, 2003

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