Patents by Inventor Christopher P. Cork

Christopher P. Cork 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).

  • Handheld isotope identification system
    Patent number: 7161150
    Abstract: A portable radiation detector using a high-purity germanium crystal as the sensing device. The crystal is fabricated such that it exhibits a length to width ratio greater than 1:1 and is oriented within the detector to receive radiation along the width of said crystal. The crystal is located within a container pressurized with ultra-pure nitrogen, and the container is located within a cryostat under vacuum.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: January 9, 2007
    Assignee: Los Alamos National Security, LLC
    Inventors: Christen M. Frankle, John A. Becker, Christopher P. Cork, Norman W. Madden
  • Handheld isotope identification system
    Publication number: 20040164250
    Abstract: A portable radiation detector using a high-purity germanium crystal as the sensing device. The crystal is fabricated such that it exhibits a length to width ratio greater than 1:1 and is oriented within the detector to receive radiation along the width of said crystal.
    Type: Application
    Filed: February 25, 2003
    Publication date: August 26, 2004
    Inventors: Christopher P. Cork, John A. Becker, Christen M. Frankle, Norman W. Madden
  • Actively driven thermal radiation shield
    Patent number: 6396061
    Abstract: A thermal radiation shield for cooled portable gamma-ray spectrometers. The thermal radiation shield is located intermediate the vacuum enclosure and detector enclosure, is actively driven, and is useful in reducing the heat load to mechanical cooler and additionally extends the lifetime of the mechanical cooler. The thermal shield is electrically-powered and is particularly useful for portable solid-state gamma-ray detectors or spectrometers that dramatically reduces the cooling power requirements. For example, the operating shield at 260K (40K below room temperature) will decrease the thermal radiation load to the detector by 50%, which makes possible portable battery operation for a mechanically cooled Ge spectrometer.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: May 28, 2002
    Assignee: The Regents of the University of California
    Inventors: Norman W. Madden, Christopher P. Cork, John A. Becker, David A. Knapp