Patents by Inventor David Wan-Ching Chen

David Wan-Ching Chen 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).

  • Patent number: 4015778
    Abstract: A multifunctional outdoor folding chair comprising two generally U-shaped open frames, one major and outer and the other minor and inner, braced pivotally one within the other to support a detachable seat which, in turn, supports pivotally a detachable back panel. The two frames are braced at points generally midway between the ends of the paired cross legs thereof by a common fastener. Rows of bosses under the seat serve to connect with locking channels on the planar top portions of the two frames, and the chair height can be adjusted by choosing the appropriate boss row for connection with the major frame. A storage chamber is attached between the leg portions of the minor frame adjacent the lower ends, and another storage shelf is built onto the undersurface of the seat. The back panel, by means of angle joints at the rear end thereof, is mounted onto the seat through locking slits thereon. Different game board patterns are printed on the top of the seat, and on the back and the front of the back panel.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: April 5, 1977
    Inventors: Helen Ho-Chiu Chen, David Wan-Ching Chen