Patents by Inventor James Y. Kuo

James Y. Kuo 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).

  • Inflatable punching device
    Patent number: 5330403
    Abstract: A punching device includes an inflatable cylinder-shaped bag which serves as a punching bag when inflated and a hollow casing which is filled with sand or water and which supports the cylinder-shaped bag resiliently and vertically thereon.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: July 19, 1994
    Inventor: James Y. Kuo