Patents by Inventor Harvey C. Hamel

Harvey C. Hamel 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).

  • Superconductive circuit level converter
    Patent number: 3943383
    Abstract: A binary circuit is provided having a first and second Josephson device connected in series, each of the devices exhibiting a superconductive state and a resistive state. A first circuit is connected in parallel with said first device and has current flowing therein when said first device switches to said resistive state. A second circuit is connected in parallel with said second device and has current flowing therein when said second device switches to said resistive state. Each of these circuits has a common connection between the first and second Josephson devices. Control current means are provided associated with each of the Josephson devices for selectively switching said devices to said resistive state.
    Type: Grant
    Filed: April 23, 1974
    Date of Patent: March 9, 1976
    Assignee: International Business Machines Corporation
    Inventor: Harvey C. Hamel