Patents by Inventor Doreen Petersen

Doreen Petersen 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
    Patent number: 9149664
    Abstract: Sunscreen compositions comprising one or more sunscreen agents (inorganic and combinations of inorganic and organic), one or more film forming polymers (synthetic or naturally derived), and heat treated xanthan gum. The sunscreen composition provides higher pre- and post-immersion SPF values, as well as a means for reducing the amount of sunscreen agents in a formulation without forfeiting efficacy.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: October 6, 2015
    Assignee: Akzo Nobel N.V.
    Inventors: Jennifer Davis, Doreen Petersen
  • Sunscreen Compositions
    Publication number: 20080181858
    Abstract: Sunscreen compositions comprising one or more sunscreen agents (inorganic and combinations of inorganic and organic), one or more film forming polymers (synthetic or naturally derived), and heat treated xanthan gum. The sunscreen composition provides higher pre- and post-immersion SPF values, as well as a means for reducing the amount of sunscreen agents in a formulation without forfeiting efficacy.
    Type: Application
    Filed: December 12, 2007
    Publication date: July 31, 2008
    Applicant: National Starch and Chemical Investment Holding Corporation
    Inventors: Jennifer Davis, Doreen Petersen