Patents by Inventor Denise Mebarek

Denise Mebarek 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).

  • Colored aluminum pigments, process for producing them and their use
    Patent number: 5931996
    Abstract: The invention concerns colored aluminum pigments comprising flake-form aluminum substrates which are coated with a metal oxide layer. The pigments are produced by a process which involves the steps of mixing a ground color pigment with a flake-form aluminum in the presence of a solvent. A metal acid ester is then added to the mixture and is then hydrolyzed to form a metal oxide layer on the aluminum substrate, followed by removal of the solvent and drying of the pigment. The pigments are useful as special-effect pigments in paints, lacquers, coatings, plastic materials, printing inks and cosmetic preparation.
    Type: Grant
    Filed: September 2, 1997
    Date of Patent: August 3, 1999
    Assignee: Eckart-Werke Standard
    Inventors: Wolfgang Reisser, Denise Mebarek