Patents by Inventor John R. Key

John R. Key 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).

  • Angular headed toothbrush
    Patent number: 5371915
    Abstract: An improved toothbrush design incorporating a bristle head including a fixed obtuse angle. This toothbrush is designed to be the sole implement needed for dental hygiene. The angle in the bristle head is formed by intermediate and distal segments which each have a straight longitudinal center axis. The intermediate segment is connected to a neck which in turn, is connected to a handle, each also having a straight longitudinal center axis. The neck, handle, and intermediate segments are contiguous and co-linear so as to provide superior cleansing of the lingual, buccal, embrasure, and distal aspects of the teeth and gums.
    Type: Grant
    Filed: April 6, 1993
    Date of Patent: December 13, 1994
    Inventor: John R. Key
  • Toothbrush
    Patent number: 4800608
    Abstract: An improved toothbrush design incorporating a bristle head including a fixed obtuse angle. This toothbrush is designed to be the sole implement needed for dental hygiene. The angled bristle head provides superior cleansing of the lingual, buccal, embrasure, and distal aspects of the teeth and gums.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: January 31, 1989
    Inventor: John R. Key