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Expired Canadian patentCanada

Method of preparing a laundry product

CA 2583298 C · Owner: The Sun Products Corporation · Inventors: Briggs, Stephen Leonard; Jones, Craig Warren

CIPO record

Overview

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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 method of preparing a composition for use in a unit dose fabric treatment system, the method comprising the steps of reacting together in the presence , of water, a ester-containing soap precursor a base material, and optionally a , solvent.

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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

  • Filed September 23, 2005 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 23, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 23, 2005
GrantedJanuary 15, 2013
Term endedSeptember 23, 2025
Patent numberCA 2583298 C
Classification (IPC)C11D1/04 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedSep 23, 2005Patent grantedJan 15, 2013Term endedSep 23, 2025

Sources & verification

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