Patents by Inventor Thomas Edward Walsh

Thomas Edward Walsh 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).

  • Constant temperature control for transferred electron devices
    Patent number: 3953878
    Abstract: Two transferred electron devices are provided in a thermally coupled relationship. One transferred electron device is operated above threshold voltage as an amplifier or oscillator, while the other transferred electron device is operated below threshold voltage so as to supply heat to the first device, to compensate for any operating temperature changes and thereby maintain the first device at a substantially constant temperature.
    Type: Grant
    Filed: March 12, 1975
    Date of Patent: April 27, 1976
    Assignee: RCA Corporation
    Inventors: Daniel David Mawhinney, Thomas Edward Walsh