Patents by Inventor Blazena Federer

Blazena Federer 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).

  • Photochromic hair coloring composition
    Publication number: 20020122780
    Abstract: A photochromic hair coloring composition and a method for applying to hair a photochromic composition, for example, selectively to form a design, which is not visible indoors but becomes visible upon exposure to sunlight.
    Type: Application
    Filed: April 14, 2000
    Publication date: September 5, 2002
    Inventors: Marjorie McManus, Blazena Federer