Patents by Inventor Lin Yen-Hui

Lin Yen-Hui 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).

  • Replaceable tooth brush with tongue scaler
    Patent number: 5005246
    Abstract: A toothbrush provided with a replaceable bristle holder that is detachably receivable within a trough formed in the brush head and secured in position by a head cover, with the cover and the trough being configured for engaging corresponding portions of the bristle holder. A tongue scaler is slidably supported within the handle portion of the brush and a corresponding handle cover provided with a track engageable by a tenon formed on an end of the scaler to permit the scaler to be extended into a position of use or retracted into a position of storage with respect to the handle.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: April 9, 1991
    Inventor: Lin Yen-Hui