Patents by Inventor James John Ringo

James John Ringo 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 receiver particularly useful for a multi-wavelength receiver array
    Patent number: 6307660
    Abstract: A multi-wavelength optical receiver including multiple photodetectors receiving different ones of a multi-wavelength signal. For each wavelength-dedicated photodetector, a separate electronic receiver circuitry is provided including a current-to-voltage converting input transistor and an emitter-follower output transistor arranged as an operational amplifier with a feedback resistor.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: October 23, 2001
    Assignee: Tellium, Inc.
    Inventors: Robert Roger Cordell, Paul Grabbe, James John Ringo