Patents by Inventor John J James

John J James 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).

  • Overvoltage protection circuit with self biased latch
    Patent number: 8755161
    Abstract: An overvoltage protection circuit is based on replacing the bias resistor in a conventional overvoltage protection circuit with a self-biased latch. The new circuit automatically survives both overvoltage and overcurrent events.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: June 17, 2014
    Assignee: Trimble Navigation Limited
    Inventor: John J James
  • Correcting offset in magneto-resistive devices
    Patent number: 7755349
    Abstract: Method and apparatus improve sensing accuracy and reduce bias shift in anisotropic magneto-resistive sensors using paired integrators and sampling switches for processing outputs of the sensor on applied set and reset signals with high immunity to temperature variations.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: July 13, 2010
    Assignee: MEMSIC, Inc.
    Inventor: John J James