Patents by Inventor Richard T. Newbould

Richard T. Newbould 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 manufacturing silicon optical fiber having a compressive surface layer
    Patent number: 5102438
    Abstract: In order to eliminate the effect of water attack on silica optical fibres, the fibres are provided with a surface layer of silicon nitride or silicon oxynitride. The method proposed includes direct nitridation. This may be achieved by adding a nitriding atmosphere to the drawing furnace gases, or to the reactive gases (TiCl.sub.4 and SiCl.sub.4) incorporated in the flame of an oxyhydrogen torch for the formation of a compressive silica/titania layer on an optical fibre by a glass soot deposition and sintering process.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: April 7, 1992
    Assignee: STC, plc
    Inventors: Richard T. Newbould, Susan J. Charlton, Stephen J. Wilson
  • Method of manufacturing optical fibers
    Patent number: 4911742
    Abstract: In order to eliminate the effect of water attack on silica optical fibres, the fibres are provided with a surface layer of silicon nitride or silicon oxynitride. The method proposed comprises direct nitridation. This may be achieved by adding a nitriding atmosphere to the drawing furnace gases, or to the reactive gases (TiCl.sub.4 and SiCl.sub.4) incorporated in the flame of an oxyhydrogen torch for the formation of a compressive silica/titania layer on an optical fibre by a glass soot deposition and sintering process.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: March 27, 1990
    Assignee: STC, plc
    Inventors: Richard T. Newbould, Susan J. Piggs, Stephen J. Wilson
  • Coating optical fibres
    Patent number: 4631078
    Abstract: A coating material is applied to drawn lightguide fibre (36') by an applicator (6) which tilts about x and y axes under the control of a concentricity monitor (7) to maintain the coating of the coated fibre (36) concentric about the fibre.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: December 23, 1986
    Assignee: STC plc
    Inventors: Paul G. Tomlinson, Richard T. Newbould