Patents by Inventor Chester A. Pratt

Chester A. Pratt 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 time division multiplexing/demultiplexing system
    Patent number: 7095959
    Abstract: A multiplexing/demultiplexing system has a multiplexor that includes a first plurality of optical switches having a plurality of outputs and a first plurality of optical delay elements coupled to the optical switches. A source of optical light is coupled to the delay elements, and an optical combiner is coupled to the plurality of outputs and a source of framing pulses. A demultiplexor includes a first and second splitter, and a threshold detector coupled to the first splitter. The demultiplexor further includes a second plurality of optical delay elements coupled to the threshold detector, and a second plurality of optical switches coupled to the second splitter and the second plurality of delay elements.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: August 22, 2006
    Assignee: Evident Technologies
    Inventors: Michael LoCascio, Clinton T. Ballinger, Chester A. Pratt, Daniel P. Landry
  • Optical time division multiplexing/demultiplexing system
    Publication number: 20020196497
    Abstract: A multiplexing/demultiplexing system has a multiplexor that includes a first plurality of optical switches having a plurality of outputs and a first plurality of optical delay elements coupled to the optical switches. A source of optical light is coupled to the delay elements, and an optical combiner is coupled to the plurality of outputs and a source of framing pulses. A demultiplexor includes a first and second splitter, and a threshold detector coupled to the first splitter. The demultiplexor further includes a second plurality of optical delay elements coupled to the threshold detector, and a second plurality of optical switches coupled to the second splitter and the second plurality of delay elements.
    Type: Application
    Filed: June 20, 2001
    Publication date: December 26, 2002
    Inventors: Michael LoCascio, Clinton T. Ballinger, Chester A. Pratt, Daniel P. Landry