Patents by Inventor Hoi C. Chan

Hoi C. Chan 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: 5416936
    Abstract: Mattresses and cushions, which have a rolling-massaging function and magnetic-therapeutic effect are described. The rolling-massaging magnetic-therapeutic mattress or cushion comprises an upper covering, an intermediate layer, an interior layer, a compound liner and a bottom covering. Between the upper covering and the intermediate layer there is provided a magnetic-therapeutic massaging layer including balls, magnetics beads, element frames and a locating substrate. The balls and magnetic beads are contained in subcavities of the element frames, rolling omni-directionally.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: May 23, 1995
    Inventor: Hoi C. Chan
  • Patent number: 5168588
    Abstract: This invention relates to a massaging mattress, comprising an elastic stuffing and a compound covering, and an array between said stuffing and covering, composed of wooden beads alternating with magnets, said array being connected with ropes to form a net. In use, the beads and magnets will roll slightly, producing a feeling of being massaged by a thousand hands. The mattress according to this invention can not only relieve back pain, etc., but also promote blood circulation. It is suitable for use in both winter and summer, and is convenient for store and transport.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: December 8, 1992
    Inventor: Hoi C. Chan