Patents by Inventor Kerstin Muller-Nagel

Kerstin Muller-Nagel 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).

  • Biaxially oriented electrical insulation film having improved shrinkage at elevated temperatures
    Patent number: 6537652
    Abstract: A biaxially oriented polypropylene film is described. The n-heptane-insoluble content of the film has a chain isotacticity index, measured by 13-C-NMR spectroscopy, of at least 95%. In particular, the film should have the lowest possible shrinkage (transverse shrinkage and longitudinal shrinkage) at elevated temperatures. In addition, a process for the production of the polypropylene film and its use is described.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: March 25, 2003
    Assignee: Hoescht Trespaphan GmbH
    Inventors: Karl-Heinz Kochem, Kerstin Muller-Nagel