Patents by Inventor David O. Chang

David O. Chang 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).

  • Method of using infrared thermal imager to diagnose eye diseases and the device thereof
    Publication number: 20080174733
    Abstract: A method of using infrared thermal imager to diagnose eye diseases including the dry eye syndromeuses an infrared thermal imager to take the surface image of the eyeball of the patient. Temperature variation at a specific position of the cornea of the eyeball is precisely measured in a unit time. An attenuation coefficient K of a temperature dropping curve and a temperature difference ?T are obtained from the temperature variation. Optimized curves of K and ?T are provided for the doctor to diagnose the patient's eye disease.
    Type: Application
    Filed: January 18, 2007
    Publication date: July 24, 2008
    Applicant: UNITED INTEGRATED SERVICES CO., LTD.
    Inventors: David O. Chang, Kenny Hui-Hua Chiang, Ko-Hua Chen