Patents by Inventor Kuei-Ching Cheng

Kuei-Ching Cheng 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).

  • Multi-level rotational shelf structure
    Patent number: 6158360
    Abstract: A multi-level rotational shelf structure including top and bottom suspension tubes fastened to the surface of a wall with a plurality of shelves between the suspension tubes. Each shelf is supported on a bushing assembly which enables each shelf to pivot about an axis between the top and bottom suspension tubes independently of the other shelves. An upright tube extends between adjacent shelves acting as a spacer and a mount for the bushing assemblies.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: December 12, 2000
    Inventor: Kuei-Ching Cheng