Patents Assigned to UGTS, Inc.
  • Gemstone evaluation system
    Patent number: 5615005
    Abstract: A device and method for grading gemstones. The device utilizes an band pass filter and detector array to obtain the spectral response of a complete image. The gemstone is illuminated in a way that provides for analysis of both reflected and transmitted light. The device utilizes multiple lighting angles to construct an composite image that is used to perform the grading of the gemstone. The device provides spectral photometric data for each individual pixel of the image, or any portion of the gemstone image.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: March 25, 1997
    Assignee: UGTS, Inc.
    Inventors: Kevin A. Valente, Ernest R. Reuter, Randall M. Wagner