Patents by Inventor Richard Hefka

Richard Hefka 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).

  • Method and circuit arrangement for reducing the background count in radioactivity measurements with a coincidence-anticoincidence evaluation
    Patent number: 4837437
    Abstract: A method for reducing the background count rate in radioactivity measurements with a coincidence-anticoincidence evaluation, in which pulses from a detector and pulses from a shield counter device are amplified and compared based on a time relationship, reduces the zero sample counter rate of the detector by supplying the amplified pulses to analog/digital converters which convert the pulses to digital values at a predetermined clock frequency. When a detection pulse is identified, digital values are transferred to a PC system. In the PC system the height, shape, or slope of the detector pulses is compared to the height, shape, or slope of any contemporaneous pulse from the shield counter device. Circuitry for performing the method is also disclosed.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: June 6, 1989
    Assignee: Gesellschaft fur Strahlen-und Umweltforschung GmbH
    Inventors: Markus Forster, Peter Maier, Harald Gaudlitz, Richard Hefka