Patents by Inventor John Jevcak

John Jevcak 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).

  • Constant sensitivity superheated droplet radiation detector/dosimeter
    Patent number: 5105088
    Abstract: Radiation detectors and dosimeters having superheated droplets of detector liquid as the radiation-sensitive component have been found to have significant variation in sensitivity with changes in operating temperature. In order to provide a more constant sensitivity, a self-regulating pressure control has been developed which will alter the pressure on the droplet-containing medium to compensate for changes in operating temperature. The pressure control is for instance a mechanical system selected from a pressure-multiplying piston or bellows assembly pressurized by a volatile liquid, and a spring-loaded elastic diaphragm assembly. This pressure control is designed to maintain a constant degree of superheat of the detector liquid in activated detectors.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: April 14, 1992
    Assignee: Atomic Energy of Canada Limited
    Inventors: Hugh Boniface, Robert Noulty, John Jevcak, Harry Ing