Patents by Inventor Susan J. Charlton

Susan J. Charlton 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