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Expired Canadian patentCanada

Clear shampoo compositions

CA 1329552 C · Owner: Van Reeth, Isabelle Michelle Elisabeth · Inventors: Van Reeth, Isabelle Michelle Elisabeth

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

A shampoo composition comprising from 10 to 60% by weight of (a) one or more anionic surfactants from 1 to 15% by weight, of (b) one or more nonionic surfactants from 0.1 to 25% by, weight of (c) a silicone component selected from polydiorgano-, siloxanes and cyclodiorganosiloxanes wherein substantially all organic substituents are lower alkyl groups from 6 to 18% by, weight of (d) a salt of saccharin and from 20 to 70% by weight of (e) water. The saccharin salt is preferably a sodium salt which acts as optical index adjusting agent to provide a clear shampoo and also renders the foam creamier.

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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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 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.
FiledMarch 29, 1989
GrantedMay 17, 1994
Term endedMay 17, 2011
Patent numberCA 1329552 C
Classification (IPC)A61K8/89 +1 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedMarch 29, 1989Patent grantedMay 17, 1994Term endedMay 17, 2011

Sources & verification

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