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Expired Canadian patentCanada

Oriented nylon film containing copper salts

CA 1304902 C · Owner: Exopack Performance Films Inc. · Inventors: Chatsick, James John; Sipos, Peter Andrew

CIPO record

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Abstract From the Canadian patent

DC-0203, Abstract of the Disclosure, An oriented nylon film useful as a carrier web, in the manufacture of fibrous reinforced resin sheets is, disclosed. Oriented nylon film containing a salt selected from at least one copper salt, at least one alkali metal halide, at least one alkaline earth metal halide or mixtures thereof is disclosed. The nylon film is preferably nylon 6, nylon 66, nylon 66/6 and/or mixtures thereof and the salt is preferably a copper salt especially cupric acetate or cupric iodide or potassium, bromide.

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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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 2009.
  • 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 14, 1987
GrantedJuly 14, 1992
Term endedJuly 14, 2009
Patent numberCA 1304902 C
Classification (IPC)B29C37/00 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJuly 14, 1987Patent grantedJuly 14, 1992Term endedJuly 14, 2009

Sources & verification

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