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).

  • Manufacture of abrasive products
    Patent number: 5037451
    Abstract: The invention provides a method of making an abrasive product which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate. The abrasive product is typically a diamond or cubic boron nitride composite compact.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: August 6, 1991
    Inventors: Richard P. Burnand, Raymond A. Chapman, Trevor J. Martell, Stephen A. Parsons
  • Manufacture of abrasive products
    Patent number: 5030250
    Abstract: The inventin provides a method of making an abrasive product which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate. This abrasive product is typically a composite abrasive compact.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: July 9, 1991
    Inventors: Richard P. Burnand, Raymond A. Chapman, Trevor J. Martell, Stephen A. Parsons
  • 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