Patents by Inventor Ku Hai-Yung

Ku Hai-Yung 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).

  • Self-power-contained multipurpose plug socket
    Patent number: 5186652
    Abstract: This invention is a plug that could be electrically powered by either a self-contained battery or an external DC electrical source. It can screw connect to many types of formations, or can be connected to an assembly board to use as a chess game or as tutorial facilities.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: February 16, 1993
    Inventor: Ku Hai-Yung