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Expired Canadian patentCanada

Hot water wash cycle built nonaqueous liquid nonionic laundry detergent composition containing amphoteric surfactant and method of use

CA 1325575 C · Owner: Colgate-Palmolive · Inventors: Broze, Guy; Delvenne, Jean-Paul

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

A liquid heavy duty laundry detergent composition comprising a suspension of builder salt in nonaqueous liquid nonionic surfactant in which the high temperature cleaning performance of the composition is improved by the addition of an amphoteric surface active agent. The cleaning performance of the composition at cleaning temperatures above 60°C is substantially improved.

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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 December 28, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 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.
FiledAugust 30, 1988
GrantedDecember 28, 1993
Term endedDecember 28, 2010
Patent numberCA 1325575 C
Classification (IPC)C11D17/08 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedAug 30, 1988Patent grantedDec 28, 1993Term endedDec 28, 2010

Sources & verification

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