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Expired Canadian patentCanada

Alkali metal alumino silicate in hair washing composition

CA 1091159 A · Owner: Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) · Inventors: Scheuermann, Fanny; Smolka, Heinz G.; Schwuger, Milan J.

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Abstract From the Canadian patent

A process for washing hair to improve the fee l and handle thereof and to reduce the tendency thereof to become greasy after washing, comprising washing the hair with an aqueous liquid hair washing preparation which contains fine-particulate water-insoluble alkali metal aluminosilicates of the formula, (Cat2O)x ? Al2O3 ? (SiO2)y in which Cat represents an alkali metal ion x represents a, number of from 0.7 to 1.5 y represents a number of from 0.8, to 6 which alkali metal aluminosilicates have a primary particle size of from 1 to 12 µ, and a calcium binding capacity of 100 to 200 mg CaO/gm of anhydrous active substance.

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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 December 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 31, 1978
GrantedDecember 9, 1980
Term endedDecember 9, 1997
Patent numberCA 1091159 A
Classification (IPC)C11D1/88 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMarch 31, 1978Patent grantedDec 9, 1980Term endedDec 9, 1997

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