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Expired Canadian patentCanada

Bleaching liquid cleaning composition

CA 1162007 A · Owner: Unilever Limited · Inventors: Beavan, Stuart W.

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

of the Invention, A photobleaching liquid cleaning composition contains 1% to 79.9% by weight of detersive surfactant, with or without a detergency builder; 0.1 to 40% by weight of a chlorite and at least about, 20% by weight of a liquid base the composition yielding a pH, of at least 6 when dissolved in water at a concentration of about 0.5 g/1. The composition is suitable for the laundering of fabrics as well as for the use in the manual cleaning of dishes or in general purpose cleaning of hard surfaces.

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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 February 14, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 10, 1981
GrantedFebruary 14, 1984
Term endedFebruary 14, 2001
Patent numberCA 1162007 A
Classification (IPC)C11D3/39 +2 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedApril 10, 1981Patent grantedFeb 14, 1984Term endedFeb 14, 2001

Sources & verification

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