Patents by Inventor William Frank Graf, Jr.

William Frank Graf, Jr. 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).

  • RF amplifier
    Patent number: 3997852
    Abstract: An R. F. wide band amplifier is disclosed. It comprises a high impedance step up transformer at the input end, a wide band high impedance J-Fet attenuator connected to the step up transformer, a dual gate MosFet amplifier connected to the attenuator and a high impedance wide band step down transformer connected to the output of the MosFet. The output of the amplifier is taken from the stepped down side of the transformer.
    Type: Grant
    Filed: June 6, 1975
    Date of Patent: December 14, 1976
    Assignee: Motorola, Inc.
    Inventors: Louis Wilfred Schornack, William Frank Graf, Jr.