Patents by Inventor Donald Eugene Kish

Donald Eugene Kish 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).

  • Reactive coupled drive circuit for magnetic bubble memories
    Patent number: 3934235
    Abstract: The two drive coils commonly used for moving magnetic bubbles in a bubble memory are driven by a pair of reactive-coupled tuned circuits. The tuned circuits are designed to maintain the proper phase relationship between currents in the circuits and to provide periodic refresh pulses once operation is initiated.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: January 20, 1976
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Andrew Henry Bobeck, Donald Eugene Kish, Roman Kowalchuk