Patents by Inventor Detler Hollenberg

Detler Hollenberg 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).

  • Solid colorant for keratin fibers
    Publication number: 20020194684
    Abstract: A shaped body is provided for preparing coloring compositions and for coloring keratin fibers. The shaped body contains at least one synthetic substantive dye. The shaped body is placed in a composition containing water to form a coloring composition that can be applied to keratin fibers.
    Type: Application
    Filed: June 14, 2002
    Publication date: December 26, 2002
    Inventors: Erik Schulze zur Wiesche, Detler Hollenberg, Michael Dreja