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Canadian application, no grantCanada

Linear viscoelastic aqueous liquid detergent compositions, especially for automatic dishwashers, of improved high temperature stability

CA 2038023 A1 · Owner: Shevade, Makarand · Inventors: Dixit, Nagaraj; Shevade, Makarand; Kenkare, Divaker

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Automatic dishwasher detergent composition is formulated at a linear viscoelastic, pseudoplastic gel-like, aqueous product of exceptionally good physical stability low, bottle residue, low cup leakage, and improved cleaning performance, Linear viscoelasticity and pseudoplastic behavior is attributed by incorporation of cross-linked high molecular weight polycarboxylate acid type thickener. Potassium to sodium weight ratios of at least 1/1 minimize amount of undissolved solid particles to further contribute to stability and pourability. Stearic acid or other higher fatty acid mixture or salt further improves physical stability. Use of potassium tripolyphosphate in place of tetrapotassium …

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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

  • Filed March 12, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2013.
  • 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 12, 1991
GrantedNo grant recorded
Term endedMarch 12, 2011
Patent numberCA 2038023 A1
Classification (IPC)C11D3/06 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedMarch 12, 1991Term endedMarch 12, 2011

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