Patents by Inventor Kersten Dittmar

Kersten Dittmar 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).

  • Coloured microstructured effect pigments
    Patent number: 7264670
    Abstract: Disclosed are colored flake-form effect pigments comprising one or more layers, where at least one of the layers comprises one or more colorants or is itself a colorant and at least one of the layers has a groove or grid structure, and to processes for the preparation thereof, and to the use thereof.
    Type: Grant
    Filed: December 9, 2004
    Date of Patent: September 4, 2007
    Assignee: Merck Patent Gesellschaft
    Inventors: Reinhold Rüger, Kersten Dittmar, Johann Dietz, Ralf Tischer
  • Coloured microstructured effect pigments
    Publication number: 20050120917
    Abstract: Disclosed are coloured flake-form effect pigments comprising one or more layers, where at least one of the layers comprises one or more colorants or is itself a colorant and at least one of the layers has a groove or grid structure, and to processes for the preparation thereof, and to the use thereof.
    Type: Application
    Filed: December 9, 2004
    Publication date: June 9, 2005
    Inventors: Reinhold Ruger, Kersten Dittmar, Johann Dietz, Ralf Tischer