Patents by Inventor Kwong Pui Tam

Kwong Pui Tam 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).

  • Electric toothbrush
    Patent number: 6647577
    Abstract: An electric toothbrush includes a handle, a neck having a longitudinal axis and a brush head mounted to the neck and including bristles that rotate about an axis that is at an acute angle with respect to the longitudinal axis of the neck. Upon activation of a motor, the bristles rotate about the acute axis and tips of the bristles always move in a direction away from the user's gumline.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: November 18, 2003
    Inventor: Kwong Pui Tam
  • Electric toothbrush
    Publication number: 20030167584
    Abstract: An electric toothbrush includes a handle, a neck having a longitudinal axis and a brush head mounted to the neck and including bristles that rotate about an axis that is at an acute angle with respect to the longitudinal axis of the neck. Upon activation of a motor, the bristles rotate about the acute axis and tips of the bristles always move in a direction away from the user's gumline.
    Type: Application
    Filed: March 7, 2002
    Publication date: September 11, 2003
    Inventor: Kwong Pui Tam