Patents by Inventor Andrea Spiller

Andrea Spiller 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).

  • Skin-coloring preparation
    Patent number: 5569460
    Abstract: The invention relates to a skin-coloring preparation, containing a hydroxycarbonyl compound which has self-tanning properties, in a cosmetologically acceptable carrier, which preparation contains at least one colorant which adheres to the skin.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: October 29, 1996
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Thekla Kurz, Sieglinde Stossel, Andrea Spiller