Patents by Inventor Detlef E. Schumann

Detlef E. Schumann 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).

  • Opaque, matte, biaxially oriented, multilayer polypopylene film, process for the production thereof, and the use thereof
    Patent number: 5516563
    Abstract: The invention relates to an opaque, matte, multilayer polypropylene film. It includes at least one base layer comprising polypropylene or a polypropylene mixture and fillers, and at least one outer layer which contains a mixture or a blend of two components I and II. Component I essentially contains a propylene homopolymer or a copolymer of an .alpha.-olefin having 2 to 10 carbon atoms or a terpolymer of an .alpha.-olefin having 2 to 10 carbon atoms or a mixture of two or more of said homopolymers, copolymers and terpolymers or a blend of two or more of said homopolymers, copolymers and terpolymers. Component II essentially contains an HDPE having an MFI (50 N/190.degree. C.) of from greater than 1 to 50 g/10 min, measured in accordance with DIN 53 735, or a blend of two components A and B. Blend component A is essentially an HDPE having an MFI (50 N/190.degree. C.) of from greater than 1 to 50 g/10 min, measured in accordance with DIN 53 735.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: May 14, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Detlef E. Schumann, Adolf Wilhelm, Ursula Murschall, Herbert Peiffer, Brigitte Kusch