Patents by Inventor Wen-Kuei Young

Wen-Kuei Young 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: 5514319
    Abstract: A fabrication method for an improved structure of a rubber keypad, particularly such a keypad used in a calculator, a telephone set, or another control module. The process first forms several protruding blocks arranged appropriately on a transparent, thin rubber plate. The protruding blocks are then marked with selected characters by painting, and the third rubber plate is then placed inside an upper and a lower mold for high-temperature, high-pressure pressing and punching. The mold is also provided with several rubber members to form a second rubber plate. The protruding blocks provided on the thin rubber plate are integrated with corresponding protruding blocks formed on the second rubber plate by the lower mold. Thus, the protruding blocks formed with characters and symbols, and the corresponding protruding blocks are combined, forming a keypad with layered character pads. Since the keypad structure has its characters printed between the layers, the discoloring of the keypads can be prevented.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: May 7, 1996
    Inventor: Wen-Kuei Young