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Expired Canadian patentCanada

Hair setting composition and method

CA 1186631 A · Owner: The Gillette Company · Inventors: Tolgyesi, Eva; Bresak, Ann F.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

This invention deals with compositions for and a method of imparting temporary set to human hair involving the application of an aqueous composition containing a dialdehyde polysaccharide and a hydroxyaromatic compound in which two hydroxyl groups are meta to each other. After application of the composition, the tress is wrapped and heated using a conventional heated rod or brush type curling iron, heated roller or salon or hand-, held hot air blower hair dryer to cause the polysaccharide and hydroxyaromatic compound to react with one another. -1-

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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 May 7, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2002.
  • 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 14, 1983
GrantedMay 7, 1985
Term endedMay 7, 2002
Patent numberCA 1186631 A
Classification (IPC)A61K8/73 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJan 14, 1983Patent grantedMay 7, 1985Term endedMay 7, 2002

Sources & verification

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