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Expired Canadian patentCanada

Process for preparing polyamide-based, titanium-dioxide pigmented pulverulent coating means with at least ten aliphatically bound carbon atoms per carbonamide group

CA 1282198 C · Owner: Aurich, Hans P. · Inventors: Mumcu, Salih; Winzer, Helmut; Aurich, Hans P.

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Abstract From the Canadian patent

Polyamides pigmented with titanium dioxide and having at least ten aliphatically bound carbon atoms per carbonamide group useful for melt-film coating are prepared by precipitating from an ethanol solution in the presence of titanium dioxide pigment which has substantially no nucleating effects on the polyamide crystallization.

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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 March 26, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 21, 1986
GrantedMarch 26, 1991
Term endedMarch 26, 2008
Patent numberCA 1282198 C
Classification (IPC)C08L77/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedMarch 21, 1986Patent grantedMarch 26, 1991Term endedMarch 26, 2008

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