Patents by Inventor Robert A. Bielby

Robert A. Bielby 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).

  • Method for making a cutting tool
    Patent number: 4266449
    Abstract: A method for making a cutting tool such as a tap, reamer or the like, in which the entire surface of a soft high speed steel blank is coated with a formation of titanium nitride, heat treated, and then finish ground by conventional means to define the cutting edges.
    Type: Grant
    Filed: October 22, 1979
    Date of Patent: May 12, 1981
    Inventor: Robert A. Bielby