Laundry compositions
CA 1302196 C · Owner: The Procter & Gamble Company · Inventors: Ross, Anne Macleod; Kirkwood, David Freeman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A laundry detergent or detergent additive composition comprising from about 0.1% to about 25% by weight of a soil-release polymer comprising ethyleneoxy terephthalate (EO-T) units and polyethyleneoxy terephthalate (PEO-T) units at a molar ratio (EO-T/PEO-T) of from about 0.5 to about 1.5 the PEC-T, units containing polyethylene oxide (PEO) linking units having a molecular weight of from about 300 to about 3000 the molecular, weight of the polymer being in the range from about 900 to about 9,000, and up to about 203 of a water-soluble quaternary ammonium surfactant. The composition provides excellent soil-release performance without detriment to clay-soil detergency and …
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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 June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.