Patents by Inventor Raymond J. Cadet

Raymond J. Cadet 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).

  • Patent number: 5138149
    Abstract: A sensor board for use with an endpoint controller which monitors light intensity is provided. The sensor board can provide a dynamic range of up to five million because a constant current driver and phase sensitive detector help eliminate noise from the detected signal. The sensor board can also subtract a DC voltage offset from the detected signal and amplify the difference to provide increased resolution of small changes in the detected signal.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: August 11, 1992
    Assignee: Xinix, Inc.
    Inventors: Raymond J. Cadet, Hung-Nan Chao, Sing-wing Hui, Eric Bogatin, Steven C. Leach