Patents by Inventor Kou-Hwa Huang

Kou-Hwa Huang 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).

  • Dart with rotary flight and light means
    Patent number: 6533688
    Abstract: A dart includes a barrel, a point movably supported on a spring member inside the barrel, a lighting circuit assembly mounted in the barrel, a fixed shaft element fixedly connected to the barrel opposite to the point, a rotary shaft element coupled to the fixed shaft element by a connector, and a flight fastened to a rotary shaft element outside the connector. The flight is rotated with the rotary shaft element relative to the fixed shaft element and the lighting circuit assembly is closed to emit light toward the flight when the dart thrown at the dartboard.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: March 18, 2003
    Inventor: Kou-Hwa Huang