Patents by Inventor Chris R. Stahl

Chris R. Stahl 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).

  • Stabilized compositions containing oxygen-labile active agents
    Patent number: 6468552
    Abstract: The present invention relates to a composition (e.g., a cosmetic composition) comprising, (a) an oxygen labile active agent, (b) erythorbic acid or a cosmetically acceptable salt or ester thereof, (c) optionally, a tocopherol derivative, (d) optionally, a pantothenic acid derivative, and (e) optionally, an extract of green tea, provided that said composition comprises a compound selected from both (c) and (d), both (c) and (e), or both (d) and (e).
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: October 22, 2002
    Assignee: Neutrogena Corporation
    Inventors: Chris R. Stahl, Aldo O. Fernandez, Frederick W. Woodin