Patents by Inventor Jan O. Appelquist

Jan O. Appelquist 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).

  • Microwave oven
    Patent number: 4165454
    Abstract: An energy supply arrangement for feeding microwave energy from a microwave source to the oven cavity of a microwave oven. The energy supply arrangement comprises a transmission line of the type having a conductor arranged at a small distance from a ground plane, a so-called micro-strip line. This micro-strip line is arranged within the oven cavity near the bottom wall and is, for example, in the shape of a spiral conductor disposed about a central energy feed point and dimensioned such that it radiates energy into the cavity at the same time that energy propagates along the line.
    Type: Grant
    Filed: November 8, 1976
    Date of Patent: August 21, 1979
    Assignee: U.S. Philips Corporation
    Inventors: Kurt H. Carlsson, Bengt U. Imberg, Frans C. DE Ronde, Jan O. Appelquist