Patents by Inventor Kathleen B. Hunter

Kathleen B. Hunter 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).

  • Patent number: 5872092
    Abstract: Disclosed are nonaqueous, bleach-containing liquid laundry detergent compositions which are in the form of a suspension of particulate material, including peroxygen bleaching agent and an alkyl sulfate anionic surfactant, dispersed in a liquid phase containing an alcohol ethoxylate nonionic surfactant and a nonaqueous, low-polarity organic solvent. Such compositions provide especially desirable cleaning and bleaching of fabrics laundered therewith and also exhibit especially desirable chemical and phase stability.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: February 16, 1999
    Assignee: The Procter & Gamble Company
    Inventors: Josephine L. Kong-Chan, Kathleen B. Hunter
  • Patent number: 5419847
    Abstract: The present invention provides an aqueous liquid bleach composition which remains stable over an extended period of time. The liquid bleach is easily pourable since it has a relatively low viscosity. The liquid bleach generally comprises (a) from about 1% to about 25% by weight of a water-soluble bleach activator; (b) from about 0.1% to about 10% by weight of hydrogen peroxide; (c) from about 1% to about 20% by weight of a phase stabilizer; (d) from about 0.001% to about 2% by weight of a chelating agent; and (e) the balance water. The liquid bleach composition is isotropic, translucent and has a viscosity of less than about 500 cps.
    Type: Grant
    Filed: May 13, 1993
    Date of Patent: May 30, 1995
    Assignee: The Procter & Gamble Company
    Inventors: Michael S. Showell, Josephine L. Kong-Chan, Philip G. Sliva, Kermit W. Kinne, Kathleen B. Hunter
  • Patent number: 5234617
    Abstract: An aqueous liquid bleach composition containing solid, water-insoluble organic peroxyacid, bleach-stable, stilbene fluorescent whitening agent, and polyvinyl pyrrolidone or polyvinyl alcohol is provided.A preferred aqueous liquid bleach composition comprising, by weight of the composition, from 5 to 15 weight % of mononylamido peroxyadipic acid; from about 0.4 to about 10 weight % of polyvinyl pyrrolidone with a molecular weight between about 5,000 and about 100,000; and from about 0.05 to about 2 weight % of a fluorescent whitening agent of the formula: ##STR1## Preferably, the ratio of polyvinyl pyrrolidone to fluorescent whitening agent is between about 20:1 and about 1:1 and the composition has a pH at 20.degree. C. from about 1 to about 6.5.
    Type: Grant
    Filed: April 20, 1992
    Date of Patent: August 10, 1993
    Assignees: Kathleen B. Hunter, Edward E. Getty, Josephine L. Kong-Chan
    Inventors: Kathleen B. Hunter, Edward E. Getty, Josephine L. Kong-Chan
  • Patent number: 5055218
    Abstract: This is a bleach granule comprising the nonylamide of peroxyadipic acid with a average particle size of about 0.1 to 260 microns, bleach-stable surfactant, and a hydratable, NAPAA-compatible material, e.g. sodium sulfate. The bleach granules are stable and are effective bleaching agents.
    Type: Grant
    Filed: April 13, 1990
    Date of Patent: October 8, 1991
    Assignee: The Procter & Gamble Company
    Inventors: Edward E. Getty, Kathleen B. Hunter, Eugene S. Sadlowski