Patents by Inventor John J. Cardarelli

John J. Cardarelli 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).

  • Portable precision radiometer
    Patent number: 4045670
    Abstract: The radiometer disclosed herein is battery operated and employs null balance electronics to obtain high precision in a hand-held instrument. A beam splitting optical system combines an image of the target with an image of an illuminated visual meter registering the temperature measured by the instrument, thereby permitting a target to be readily scanned for temperature variations.
    Type: Grant
    Filed: September 24, 1976
    Date of Patent: August 30, 1977
    Assignee: Williamson Corporation
    Inventors: Alan S. Anderson, John J. Cardarelli