Patents by Inventor Hsueh-Hung Chen Hsu

Hsueh-Hung Chen Hsu 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).

  • Lamp bulb with two filaments for Christmas tree light
    Patent number: 5886458
    Abstract: A lamp bulb for a Christmas tree light set including two filaments connected between two lead-in wires thereof at different elevations above a mica disc.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: March 23, 1999
    Inventor: Hsueh-Hung Chen Hsu