Patents by Inventor Catherine Ann Nordman

Catherine Ann Nordman 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).

  • Low hysteresis high sensitivity magnetic field sensor
    Patent number: 9322889
    Abstract: An MTJ sensor having low hysteresis and high sensitivity is disclosed. The MTJ sensor includes, in one embodiment, a bridge with first and second active MTJ elements and first and second passive MTJ elements connected in a Wheatstone bridge configuration. First and second magnetic shield elements are located over the first and second passive MTJ elements and form a gap therebetween that concentrates magnetic flux toward the first and second active MTJ elements. A three-dimensional coil is wound around the first and second magnetic shield elements with over-windings located over the first and second magnetic shield elements and under-windings located under the first and second magnetic shield elements, connected together by a plurality of vias adjacent the first and second magnetic shield elements.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: April 26, 2016
    Assignee: NVE Corporation
    Inventors: Catherine Ann Nordman, Peter Eames, Russ Beech, David J. Brownell
  • LOW HYSTERESIS HIGH SENSITIVITY MAGNETIC FIELD SENSOR
    Publication number: 20130169271
    Abstract: An MTJ sensor having low hysteresis and high sensitivity is disclosed. The MTJ sensor includes, in one embodiment, a bridge with first and second active MTJ elements and first and second passive MTJ elements connected in a Wheatstone bridge configuration. First and second magnetic shield elements are located over the first and second passive MTJ elements and form a gap therebetween that concentrates magnetic flux toward the first and second active MTJ elements. A three-dimensional coil is wound around the first and second magnetic shield elements with over-windings located over the first and second magnetic shield elements and under-windings located under the first and second magnetic shield elements, connected together by a plurality of vias adjacent the first and second magnetic shield elements.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 4, 2013
    Applicant: NVE CORPORATION
    Inventors: Catherine Ann Nordman, Peter Eames, Russ Beech, David J. Brownell