Patents by Inventor David G. Bertelsman

David G. Bertelsman 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).

  • Highly filled thermoplastic compositions
    Patent number: 6472042
    Abstract: Filled thermoplastic compositions useful e.g., as sound-deadening sheeting for automotive carpet are obtained by blending at least one ethylene/&agr;-olefin interpolymer; about 40-95 percent by weight of filler; and optionally elastomeric polymers.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: October 29, 2002
    Assignee: Dow Global Technologies Inc.
    Inventors: Joseph A. Dibbern, Stephen R. Betso, David G. Bertelsman, Martin J. Guest