Patents by Inventor Visweswaria N. Collur

Visweswaria N. Collur 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).

  • Sunscreen compositions comprising pongomol
    Patent number: 5152983
    Abstract: A sunscreen composition suitable for topical application to human skin or hair, to provide protection from excessive exposure to ultra-violet rays, comprises:i) an effective amount of a substituted 1,3-diketone having an ultra-violet absorption band within the range of from 250 to 500 nm, and an extinction coefficient E of from 5,000 to 70,000; andii) a physiologically acceptable vehicle for the substituted 1,3-diketone.
    Type: Grant
    Filed: November 9, 1990
    Date of Patent: October 6, 1992
    Assignee: Chesebrough-Pond's USA Co., Division of Conopco, Inc.
    Inventors: Mayara E. N. Nambudiry, Visweswaria N. Collur