Patents by Inventor Patricia Ritenour Hertz

Patricia Ritenour Hertz 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).

  • Stable photoprotective compositions
    Patent number: 5827508
    Abstract: The present invention relates to compositions which are useful for providing protection to the skin of humans from the harmful effects of ultraviolet radiation. In particular the present invention relates to compositions having improved chemical, physical, and photostability. These compositions comprise from about 0.1% to about 10% of a dibenzoylmethane sunscreen compound, from about 0.1% to about 20% of a surface-treated zinc oxide, and a carrier suitable for application to the skin.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: October 27, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Paul Robert Tanner, Patricia Ritenour Hertz, Margaret Ann O'Donoghue, Christopher Irwin