Patents by Inventor Frederick L. Roder

Frederick L. Roder 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).

  • X-ray or gamma-ray examination device for moving objects
    Patent number: 4064440
    Abstract: This apparatus obtains information about the interior of optically opaque objects rectilinearly translated therethrough. This apparatus assures the conformity of objects to predetermined constraints for purposes of quality control, and enables content identification.
    Type: Grant
    Filed: June 22, 1976
    Date of Patent: December 20, 1977
    Inventor: Frederick L. Roder
  • Method and apparatus for providing height variation compensation in certain nuclear gauging applications including nuclear mine detection
    Patent number: 3982125
    Abstract: A method and apparatus for compensating for height variations in certain lear gauging applications, particularly nuclear mine detection, are disclosed. A source of monoenergetic photons and a pair of detectors are provided. One of the two detectors includes a K-edge filter, whereas the second detector does not. After processing, the outputs of the two detectors are applied to a suitable readout device. The combination of the filtered detector and unfiltered detector provide a means to compensate for any height variation of the source-detector assembly above the medium under study; thereby permitting any change in the average atomic number of that medium to be discerned.
    Type: Grant
    Filed: January 9, 1975
    Date of Patent: September 21, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Frederick L. Roder