Patents by Inventor Chang-Shui Fang

Chang-Shui Fang 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).

  • Pyroelectric crystals with high figures of merit
    Patent number: 4648991
    Abstract: Pyroelectric crystals having relatively high figures of merit (p/K) of the order of 1.8 or more are provided. They are preferably prepared by doping alanine substituted triglycine sulfate crystals with phosphorous and/or arsenic.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: March 10, 1987
    Assignee: Research Corporation
    Inventors: Chang-Shui Fang, Yao Xi, Zhi-Xiong Chen, Amar S. Bhalla, Leslie E. Cross