Patents by Inventor Chang-Shyong Hwang

Chang-Shyong Hwang 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: 5397294
    Abstract: A health aid device structure which is used to place around the male penis during sexual intercourse, a high frequency vibration is generated which applies to the female private part such that her excitement period is shortened. The health aid device can also be used as a massaging device for other parts of the human body. The device has an external case, a bottom cover and a side cover, forming a box in which an eccentric cam motor and a battery pack are enclosed. Each of the two side surfaces of the external case is provided with a slot, into which the side cover is inserted and positioned in place. The side cover and the bottom cover are provided with an appropriate recessed arcuate surface, in addition, the side cover is provided with an adjustable strap and the two edges of the external case are provided with a strap having fastening members.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: March 14, 1995
    Inventor: Chang-Shyong Hwang
  • Patent number: D418563
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: January 4, 2000
    Inventor: Chang-Shyong Hwang