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Expired Canadian patentCanada

Laundry detergent compositions having enhanced greasy and oily soil removal performance

CA 1109755 A · Owner: The Procter & Gamble Company · Inventors: Murphy, Alan P.

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Abstract From the Canadian patent

Laundry detergent compositions containing no phosphate or low levels of phosphate materials and specific mixtures of selected nonionic surfactants and selected cationic surfactants are disclosed. The Nonionic/cationic surfactant mixtures are formulated to have "cloud point" characteristics and, preferably, reduced cationic monomer concentrations as defined herein. These compositions are unusually effective in removing greasy and oily soils and body soils from fabrics; they are also effective in the removal of particulate soils. process is disclosed for laundering fabrics using compositions containing nonionic surfactants and cationic surfactants.

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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 September 29, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 29, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 29, 1978
GrantedSeptember 29, 1981
Term endedSeptember 29, 1998
Patent numberCA 1109755 A
Classification (IPC)C11D1/83

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJune 29, 1978Patent grantedSep 29, 1981Term endedSep 29, 1998

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