Patents by Inventor Stephen C. Hatcher

Stephen C. Hatcher 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).

  • Combined dynamic focus circuit flyback capacitor
    Patent number: 4460851
    Abstract: In a cathode ray tube (CRT) display system utilizing a semiconductor switch in the output stage of the fast scan axis, a resonant circuit is coupled to the flyback circuit for production of a dynamic focus voltage. The capacitance required for the flyback circuit is derived from the equivalent capacitance of the dynamic focus resonant circuit, thereby eliminating the need for a separate flyback capacitor.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: July 17, 1984
    Assignee: International Business Machines Corporation
    Inventors: William R. Bistline, Stephen C. Hatcher