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Expired Canadian patentCanada

Liquid dishwashing detergent composition for improved hand washing of dishes in cold water

CA 1291690 C · Owner: Choi, Sunhee · Inventors: Choi, Sunhee

CIPO record

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Abstract From the Canadian patent

LIQUID DISHWASHING DETERGENT COMPOSITION FOR IMPROVED HAND WASHING OF DISHES IN COLD WATER ABSTRACT OF THE DISCLOSURE:, A liquid dishwashing detergent composition for hand washing of dishes in cold water includes a synthetic organic nonionic detergent, a cationic surface active agent a water soluble C21 dicarboxylic salt and an aqueous medium. The proportion of the combination of nonionic detergent and cationic surface active agent is a detersive proportion useful to remove fatty deposits on dishes and the proportion, of the C21 dicarboxylic salt is sufficient to improve the detersive action in cold water of the combination of nonionic detergent and cationic surfactant so that the …

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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 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 12, 1986
GrantedNovember 5, 1991
Term endedNovember 5, 2008
Patent numberCA 1291690 C
Classification (IPC)C11D1/83 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 12, 1986Patent grantedNov 5, 1991Term endedNov 5, 2008

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