Patents by Inventor Hoi Chau Chan

Hoi Chau 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).

  • Massaging mattress
    Patent number: 5323499
    Abstract: This invention relates to a massaging mattress comprising an array of wooden beads alternating with magnets, the wooden beads and magnets interconnected to one another with threads to form a net in which the beads and magnets will roll slightly to produce a feeling of being massaged.
    Type: Grant
    Filed: December 8, 1992
    Date of Patent: June 28, 1994
    Inventor: Hoi Chau Chan