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Expired Canadian patentCanada

A detergent composition

CA 2268671 C · Owner: Moss, Michael Alan John · Inventors: Brooker, Anju Deepali Massey; Moss, Michael Alan John; Brooker, Alan Thomas

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

The invention relates to a detergent composition comprising: a) a hydrophobic peroxyacid bleaching component, capable of providing hydrophobic peroxyacid compound, with the proviso the component does not comprise the sodium salt of nonanoyloxybenzene sulfonate; b) a hydrophilic nonionic component, having a Hydrophilic/Lipophilic Balance of at least 10.8, as measured by the HLB-test; c) a cationic surfactant component, with the proviso that the cationic surfactant is not a cationic choline ester surfactant or a salt of the cationic C12-C14 alkyl dimethyl ammonium ethanol surfactant.

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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 October 2, 1997 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2019.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 2, 1997
GrantedDecember 10, 2002
Term endedOctober 2, 2017
Patent numberCA 2268671 C
Classification (IPC)C11D1/72 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedOct 2, 1997Patent grantedDec 10, 2002Term endedOct 2, 2017

Sources & verification

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