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Expired Canadian patentCanada

Creamy scouring compositions

CA 1332908 C · Owner: The Procter & Gamble Company · Inventors: Braganza, Lellis Francis

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

Disclosed are viscous creamy scouring compositions which contain an abrasive, are substantially free of thickener and, contain a combination of a surfactant a solvent with a water-, solubility under 5% and an electrolyte. The composition contains:, from 2% to 10% of surfactant from 1% to 10% of a solvent having a water-solubility from 0 to 5% at 25°C, from 0.5% to 8% of electrolyte less than 0.2% of thickener.

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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 November 8, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 8, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 30, 1989
GrantedNovember 8, 1994
Term endedNovember 8, 2011
Patent numberCA 1332908 C
Classification (IPC)C11D3/43 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedJan 30, 1989Patent grantedNov 8, 1994Term endedNov 8, 2011

Sources & verification

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