Patents by Inventor Gwo-Dawn Chang

Gwo-Dawn 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).

  • Wide-view-angle and planarized-packing structure for IR heat sensing elements
    Patent number: 5543620
    Abstract: A structure for pyroelectric IR heat-sensing elements having a wide angle field of view is made by forming the essential heat-sensing elements and the related electronic elements into a planarized-packing configuration suitable for surface bonding. The heat-sensing elements are caused to be inclined and facing each other in a suspended structure so as to increase the sensing viewing angle.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: August 6, 1996
    Assignee: Opto Tech Corporation
    Inventors: San-Bao Lin, Gwo-Dawn Chang, Jin-Shown Shie, Chein-Hsun Wang, Ping-Kuo Weng, Ming-Der Lin