Patents by Inventor Juin Chang

Juin 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).

  • Dartboard with detachable signs
    Publication number: 20060151957
    Abstract: A dartboard has a board member and a plurality of signs. The board member has a central target and a plurality of target sections on a front side thereof. The signs are detachably mounted on a periphery of the board member associated with the target sections respectively.
    Type: Application
    Filed: January 11, 2005
    Publication date: July 13, 2006
    Inventors: Francis Pan, Juin Chang, Tsung-Chih Tsai, Wen-Fu Chang