Patents by Inventor Kenneth A. Benson

Kenneth A. Benson 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).

  • Surface heating food wrap with variable microwave transmission
    Patent number: 4972058
    Abstract: The present invention provides a composite material for generation of heat by absorption of microwave energy comprising a porous dielectric substrate and a coating comprising a thermoplastic dielectric matrix and flakes of a micorwave susceptive material distributed within the matrix, said flakes having an aspect ratio of at least about 10, a generally planar, plate-like shape, with a thickness of about 0.1 to about 1.0 micrometers, a transverse dimension of about 1 to about 50 micrometers, and angular edges. The composite material exhibits decreased microwave transmission as a function of previously applied pressure.
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: November 20, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Kenneth A. Benson, Dan S. C. Fong