Patents by Inventor Chan B. Su

Chan B. Su 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).

  • Toothbrush
    Patent number: 5165135
    Abstract: A novel construction of a toothbrush is provided which allows a bristle-carrying brushing head to turn around its own axis and the said head is connectable to the distal end of an elongated handle at an angle to the plane of the said handle.
    Type: Grant
    Filed: October 22, 1991
    Date of Patent: November 24, 1992
    Inventor: Chan B. Su