Patents by Inventor Hsiung Yu-Kuang

Hsiung Yu-Kuang 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).

  • Playpen frame structure
    Patent number: 5358220
    Abstract: A playpen frame structure comprising a rectangular top rail frame supported by four upright legs. Each side of the top rail includes a joint in its center to allow the frame to collapse. A reinforcement structure is provided on the lower ends of the supporting legs comprising reinforcement bars extending diagonally from the lower ends of the legs and pivotally connected to a central member.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: October 25, 1994
    Inventor: Hsiung Yu-Kuang