Patents by Inventor Frederick P. Krueger

Frederick P. Krueger 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).

  • Dead-time compensation for a logarithmic display rate meter
    Patent number: 4772793
    Abstract: An improved circuit is provided for application to a radiation survey meter that uses a detector that is subject to dead time. The circuit compensates for dead time over a wide range of count rates by producing a dead-time pulse for each detected event, a live-time pulse that spans the interval between dead-time pulses, and circuits that average the value of these pulses over time. The logarithm of each of these values is obtained and the logarithms are subtracted to provide a signal that is proportional to a count rate that is corrected for the effects of dead time. The circuit produces a meter indication and is also capable of producing an audible indication of detected events.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: September 20, 1988
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: John A. Larson, Frederick P. Krueger