Patents by Inventor Klaus-Ernst Poehlmann

Klaus-Ernst Poehlmann 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).

  • Patent number: 6773255
    Abstract: Multilayer plastic composites containing at least two incompatible plastics, A and B, in which the layering sequence alternates between A and B, the layers of plastic B are discontinued at regular intervals, and the resulting gaps in the layers are filled in with plastic A, exhibit good adhesion between the layers. In preferred embodiments of the invention, the amorphous, crystalline, or semi-crystalline plastic B has a higher coefficient of thermal expansion than the amorphous plastic A. The plastic composite is preferably produced via coextrusion.
    Type: Grant
    Filed: May 15, 2001
    Date of Patent: August 10, 2004
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Volker Benz, Hans Lorenz, Michael Meier-Kaiser, Michael Müller, Klaus-Ernst Pöhlmann
  • Publication number: 20010026026
    Abstract: Multilayer plastic composites containing at least two incompatible plastics, A and B, in which the layering sequence alternates between A and B, the layers of plastic B are discontinued at regular intervals, and the resulting gaps in the layers are filled in with plastic A, exhibit good adhesion between the layers. In preferred embodiments of the invention, the amorphous, crystalline, or semi-crystalline plastic B has a higher coefficient of thermal expansion than the amorphous plastic A. The plastic composite is preferably produced via coextrusion.
    Type: Application
    Filed: May 15, 2001
    Publication date: October 4, 2001
    Applicant: Roehm GmbH Chemische Fabrik
    Inventors: Volker Benz, Hans Lorenz, Michael Meier-Kaiser, Michael Mueller, Klaus-Ernst Poehlmann
  • Patent number: 6280671
    Abstract: Multilayer plastic composites containing at least two incompatible plastics, A and B, in which the layering sequence alternates between A and B, the layers of plastic B are discontinued at regular intervals, and the resulting gaps in the layers are filled in with plastic A, exhibit good adhesion between the layers. In preferred embodiments of the invention, the amorphous, crystalline, or semi-crystalline plastic B has a higher coefficient of thermal expansion than the amorphous plastic A. The plastic composite is preferably produced via coextrusion.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: August 28, 2001
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Volker Benz, Hans Lorenz, Michael Meier-Kaiser, Michael Mueller, Klaus-Ernst Poehlmann