Patents by Inventor Henk Niessink

Henk Niessink 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).

  • Composition for dyeing keratin fibers containing vegetable dyes, a direct dye compound and oil and method of dyeing hair using same
    Patent number: 5865853
    Abstract: The composition for dyeing keratin fibers is mixed with water prior to use and contains from 35 to 75 percent by weight of at least one powdery vegetable dye material; from 25 to 65 percent by weight of at least one oil; and from 0.001 to 15 percent by weight of a physiologically unobjectionable nitro dye compound, azo dye compound, quinone dye compound and/or a triphenylmethane dye compound. A method of dyeing hair using this composition is also described.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: February 2, 1999
    Assignee: Wella Aktiengesellschaft
    Inventors: Manfred Schmitt, Uwe Lenz, Wolfgang Balzer, Henk Niessink