Patents by Inventor Kun Ching Tsai

Kun Ching Tsai 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).

  • Foldable speaker
    Patent number: D530310
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: October 17, 2006
    Inventor: Kun Ching Tsai
  • Disc type speaker
    Patent number: D538787
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: March 20, 2007
    Inventor: Kun Ching Tsai