Patents by Inventor Stephen A. Parsons

Stephen A. Parsons 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).

  • Abrasive and wear resistant material
    Patent number: 4944913
    Abstract: A cemented carbide which contains less than 20 weight percent of cubic boron nitride particle. The material is abrasive and wear resistant. The material is produced under cubic boron nitride synthesis conditions.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: July 31, 1990
    Inventors: Stephen A. Parsons, Henry B. Dyer, John Dodsworth