Patents by Inventor Harry W. Schader

Harry W. Schader 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).

  • Heated dental knife
    Patent number: 5889257
    Abstract: A heated dental knife for trimming thermoplastic dental trays which has a heat sink temperature stabilizer and heating element designed to maintain a pre-selected blade temperature without adjustments under normal use in cutting such dental trays.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: March 30, 1999
    Assignee: Challenge Products, Inc.
    Inventors: Harry W. Schader, Charles L. Bull