Patents by Inventor Timothy Finegan

Timothy Finegan 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).

  • Optical communications system including doped optical fiber filter
    Patent number: 5594578
    Abstract: An optical telecommunications system suitable for operation as a wavelength division multiplex, which system contains at least one filter for attenuating signals at wavelength which are unwanted at a location of the filter, characterized in that the filter comprises an optical fiber which contains a dopant adapted to absorb the unwanted signals.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: January 14, 1997
    Assignee: British Telecommunications public limited company
    Inventors: Benjamin J. Ainslie, Iain J. Wilkinson, Timothy Finegan