Patents by Inventor Sharon R. Robertson

Sharon R. Robertson 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: 5053221
    Abstract: A novel mascara composition is disclosed. The composition comprises: (a) an effective amount of water; (b) an effective amount of microsphere particles selected from the group consisting of silica beads, polymethylmethacrylate beads, and combinations thereof; and (c) an effective amount of a water dispersible, high molecular weight, amorphous anionic polyester polymer having an approximate molecular weight, MN, of about 14,000 to about 16,000 and a melt viscosity at 200.degree. C. of about 2000 to about 42,000 poise as measured with a Sieglaff-McKelvey Capillary Rheometer, 100 sec.sup.-1 shear rate. The polyester polymer is added to the mascara composition as a water dispersion having a solids content of not more than about 40% by weight of the dispersion. Prepared mascara compositions contain silica beads polymethylmethacrylate beads and an effective amount of the emulsifier C12-C15 alcohols benzoate.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: October 1, 1991
    Assignee: Maybe Holding Co.
    Inventors: Sharon R. Robertson, Robert J. Edmundson