Patents by Inventor Colin W. Brown

Colin W. Brown 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 of making graded structure composites
    Patent number: 4911625
    Abstract: This case relates to tough, wear resistant graded structure composites, to a process for preparing the same and to tools and products fabricated therefrom. The composites have a surface layer e.g. of WC and a binder, an interface layer, e.g. which is a stepwise transition from the surface layer whereby the binder content thereof gradually increases, a substrate layer which is a combination of e.g. an initial high carbon steel layer and finally a base layer of bainitic steel. The composites are substantially non-porous and can be used to fabricate components such as drill bits, wear plates, pump components machine tools, seals, washers, bearings and the like.
    Type: Grant
    Filed: May 17, 1989
    Date of Patent: March 27, 1990
    Assignee: The British Petroleum Company, p.l.c.
    Inventors: Alan R. Begg, Colin W. Brown, Neil E. S. Charman
  • Graded structure composites
    Patent number: 4859542
    Abstract: This case relates to tough, wear resistant graded structure composites, to a process for preparing the same and to tools and products fabricated therefrom. The composites have a surface layer e.g. of WC and a binder, an interface layer, e.g. which is a stepwise transition from the surface layer whereby the binder content thereof gradually increases, a substrate layer which is a combination of e.g. an initial high carbon steel layer and finally a base layer of bainitic steel. The composites are substantially non-porous and can be used to fabricate components such as drill bits, wear plates, pump components machine tools, seals, washers, bearings and the like.
    Type: Grant
    Filed: September 1, 1987
    Date of Patent: August 22, 1989
    Assignee: The British Petroleum Company p.l.c.
    Inventors: Alan R. Begg, Colin W. Brown, Neil E. S. Charman