Patents by Inventor Nai T. Yu

Nai T. Yu 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).

  • Apparatus and methods for measuring characteristics of biological tissues and similar materials
    Patent number: 5582168
    Abstract: Apparatus and methods for characterizing biological tissues and other turbid media with normalization that serves to compensate for the effects of scattering, reflectance, and absorption are disclosed.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: December 10, 1996
    Assignee: Georgia Tech Research Corp.
    Inventors: Mark A. Samuels, Scott W. Patterson, Jonathan A. Eppstein, Nai T. Yu, Sven-Erik Bursell
  • Apparatus and methods for quantitatively measuring molecular changes in the ocular lens
    Patent number: 5203328
    Abstract: Apparatus and methods for noninvasively diagnosing diabetes mellitus, the prediabetic condition, and cataracts in the human (or other) body are disclosed. Diagnoses are made by illuminating ocular lens tissue with a narrow-band light source at a selected wavelength, detecting the backscattered radiation intensity at the peak of the fluorescent response, and normalizing the detected value with the intensity of its Rayleigh component. Measurements provided in this manner can be used as improved indicators of the presence or absence of certain diseases or conditions.
    Type: Grant
    Filed: July 17, 1991
    Date of Patent: April 20, 1993
    Assignee: Georgia Tech Research Corporation
    Inventors: Mark A. Samuels, Scott W. Patterson, Jonathan A. Eppstein, Nai T. Yu, Sven-Erik Bursell