Patents by Inventor John G. Stillmank

John G. Stillmank 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 mount filter with integral transmission line connection
    Patent number: 4879533
    Abstract: A surface mount dielectric block filter with an integral transmission line connection to external circuitry is disclosed. In order to connect an input/output capacitor metallized on the surface of the dielectric block to a substrate upon which the dielectric block is directly mounted, a transmission line of appropriate characteristic impedance disposed on the surface of the dielectric block is connected between one plate of the metallized capacitor and an input/output terminal. Two such dielectric block filters may be coupled together to form a radio transceiver duplexer.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: November 7, 1989
    Assignee: Motorola, Inc.
    Inventors: David M. de Muro, John G. Stillmank, Duane C. Rabe