Patents by Inventor Anne M. Ross

Anne M. Ross has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Laundry compositions
    Patent number: 4795584
    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 PEO-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 20% of a water-soluble quaternary ammonium surfactant.The composition provides excellent soil-release performance without detriment to clay-soil detergency and anti-deposition performance.
    Type: Grant
    Filed: July 7, 1987
    Date of Patent: January 3, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Anne M. Ross, David F. Kirkwood