Patents by Inventor Tzai H. Huang

Tzai H. Huang 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: 5040673
    Abstract: Disclosed is a stationery case for keeping writing materials, which comprises an ornament mounted on a compression spring which is fastened in the interior of the casing. The ornament has a magnet fastened therein and is pressed and released so that clips which are received inside a curved recess in the casing can be taken out of the casing and placed on a recessed surface portion on a cover at the top of the casing for ready use. A plurality of compartments are made inside the casing in the portion opposite to the curved recess for keeping a variety of writing materials. A whistle is fastened inside the casing and is controlled to make a sharp, clear sound during a downward stroke of the ornament.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: August 20, 1991
    Inventors: Johnny Huang, Tzai H. Huang