Patents by Inventor Tilmann Hezel

Tilmann Hezel 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).

  • Cholesteric layered material having improved color stability, and the production thereof
    Patent number: 6850310
    Abstract: The invention relates to a cholesteric layered material with improved color shift stability.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: February 1, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Prechtl, Norbert Schneider, Frank Meyer, Peter Blaschka, Sylke Haremza, Tilmann Hezel, Robert Parker, Volker Richter