Patents by Inventor Kevin L. DeFever

Kevin L. DeFever 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).

  • Wire-free, dual-mode calibration instrument for high energy therapeutic radiation
    Patent number: 7470912
    Abstract: An instrument for checking quality of therapeutic x-ray and electron radiation provides modes optimized for both electrons and for photons obtained by physically flipping the unit to interpose the necessary build-up material between the radiation beam and contained detectors. The invention provides an improved method of constructing ionization detectors for improved energy discrimination using such detectors and wire-free operation.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: December 30, 2008
    Assignee: Standard Imaging, Inc.
    Inventors: Daniel G. Schmidt, Myles L. Sommerfeldt, Kevin L. DeFever, Thomas C. Bonde
  • Wire-free, dual-mode calibration instrument for high energy therapeutic radiation
    Patent number: 7189975
    Abstract: An instrument for checking quality of therapeutic x-ray and electron radiation provides modes optimized for both electrons and for photons obtained by physically flipping the unit to interpose the necessary build-up material between the radiation beam and contained detectors. The invention provides an improved method of constructing ionization detectors for improved energy discrimination using such detectors and wire-free operation.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: March 13, 2007
    Assignee: Standard Imaging, Inc.
    Inventors: Daniel G. Schmidt, Myles L. Sommerfeldt, Kevin L. DeFever, Thomas C. Bonde