Patents by Inventor Ute Niebergall

Ute Niebergall 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).

  • Blended polyolifin thermoplastic having improved notched impact strength
    Patent number: 6028145
    Abstract: The blends, according to the invention, of polyethylene and polypropylene having improved notched impact strength are distinguished by the fact that they containa) from 36 to 64% by weight of isotactic propylene homopolymer,b) from 35 to 63% by weight of high density polyethylene (HDPE) andc) from 1 to 10% by weight of a random copolymer comprising from 75 to 85% by weight of ethylene units and from 15 to 25% by weight of propylene units,all stated percentages by weight being based on the total weight of the respective blend.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: February 22, 2000
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Ute Niebergall, Jurgen Bohse, Britta Schurmann, Wolfgang Grellmann