Patents by Inventor Wei Y. Chu

Wei Y. Chu 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: 5244299
    Abstract: An apparatus is disposed for use in writing and massaging, including a pen unit to hold a replaceable refill, a bottom cap covered on the pen unit at the bottom and having a stimulating ball for spot massaging, a lower barrel attached to the pen unit at the top to hold a battery, an upper barrel attached to the lower barrel at the top to hold a motor and eccentric wheel assembly, and a top cap covered on the upper barrel at the top. The upper barrel and the top cap have pins on the outside vibrated by the eccentric wheel for massaging part of the body. A clip is made on the upper barrel for hanging.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: September 14, 1993
    Inventor: Wei Y. Chu