Patents by Inventor Frederick A. Mettler

Frederick A. Mettler 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).

  • Digital gamma ray imaging device
    Patent number: 5132542
    Abstract: The arrangement imaging a body through gamma radiation comprising the steps of detecting, within each fixed time period of a succession of fixed time periods at a plurality of locations impinged by the gamma radiation, electric charge levels corresponding to photoelectric events; counting within each fixed period only those charge levels at each location which are greater than a predetermined threshold level, and adding the counted charge levels for the succession of fixed time periods, whereby a distinct image of the body may be produced therefrom.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: July 21, 1992
    Inventors: Bernd Bassalleck, Michael F. Hartshorne, Charles A. Kelsey, Frederick A. Mettler, David M. Wolfe