Patents by Inventor D. S. H. Chan

D. S. H. Chan 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).

  • Retractable cathodoluminescence detector with high ellipticity and high backscattered electron rejection performance for large area specimens
    Patent number: 5569920
    Abstract: A cathodoluminescence detection system including a semi-ellipsoidal mirror of high ellipticity, with the mirror constructed of material of low atomic number to minimize interference caused by backscattered electrons. An emission radiation guide is mounted in line with the axis of rotation of the mirror to optimize CL radiation collection. Low detector height provides high spatial resolution in electron beam systems.
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: October 29, 1996
    Assignee: National University of Singapore
    Inventors: J. C. H. Phang, W. K. Cbim, D. S. H. Chan, Y. Y. Liu