Patents by Inventor Liliana George

Liliana George 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).

  • Methods and compositions for improving sun protection from sunscreen formulations
    Patent number: 6165449
    Abstract: Disclosed are methods and compositions for increasing the sun protection factor of oil and water sunscreen emulsions comprising adding a phthalic acid derivative to an oil and water sunscreen emulsion in an amount effective to increase the sun protection factor of the emulsion, the phthalic acid derivative having the general formula: ##STR1## where R represents an organic substituent, X represents a cation; and m is an integer satisfying the valency of X.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: December 26, 2000
    Assignee: Stepan Company
    Inventors: Liliana George, John Sottery