Pageant Technologies, Inc.

Estancia Limited

Micromem Technologies, Inc.

University of Utah Research Foundation

Wireless Advanced Vehicle Electrification, Inc.

James Stephenson

Richard Michael Lienau

Dan Carothers

Bruce Shipley

Bruce Kent Gale

Cynthia Furse

Patrice Lethelier

A first apparatus for passive magnetic field attenuation comprises a wireless power transfer ('WPT') pad comprising one or more windings and a ferrite structure adjacent to the one or more windings, and a passive magnetic flux cancellation ('PMFC') structure located adjacent to the WPT pad. The PMFC structure includes one or more vertical shields oriented substantially perpendicular to the WPT pad, where each of the one or more vertical shields attenuates an electromagnetic field, and a vertical shield retention structure that retains each of the one or more vertical shields in position with respect to the WPT pad.

Passive magnetic field attenuation

A magnetic field generation system includes first () and second () magnetic flux concentrators spaced apart to form a sample volume (). A first set of auxiliary permanent magnets () can be symmetrically oriented about and in contact with a portion of the first magnetic flux concentrator (). Similarly, a second set of auxiliary permanent magnets () can be symmetrically oriented about and in contact with a portion of the second magnetic flux concentrator (). The first() and second () sets of auxiliary magnets can be magnetically associated via the first () and second () magnetic flux concentrators. Magnetically soft shunts () can be movably oriented to allow variation of the magnetic field strength across the sample volume by disrupting the field flux across the magnetic flux concentrators.

High field strength magentic field generation system and associated methods

An NMR probe which includes a probe matrix () having a void sample () volume therein. A conductive coil () can be at least partially embedded in the probe matrix (). By embedding the conductive coil () in the probe matrix (), the fill-factor can be significantly increased. NMR probes can be formed by a method which includes wrapping a conductive wire () around a coil form () to produce a coil precursor assembly. The probe matrix () can be formed around the conductive wire and coil form with a matrix material using any suitable technique such as soft lithography and/or molding. The coil form can be removed from the probe matrix leaving a void sample volume () in the probe matrix. Advantageously, the NMR probes of the present invention allow for fill-factors approaching and achieving 100%.

Enhanced fill-factor NMR coils and associated methods

A non-volatile magnetic memory cell having a magnetic element with multiple segments which are not co-linear. Each of the segments is magnetized with a remnant magnetic field using a single write line. The segments can be magnetized in a first direction or a second direction, corresponding to first and second orientations of the memory cell. A sensor is provided to determine the direction in which the segments are magnetized and thereby the orientation of the cell. The segments are oriented such that the magnetic flux fields created by their respective remnant magnetic fields have a cumulative effect at a sensing region of the sensor. The cumulative effect allows a less sensitive sensor to be used than in known device. In various embodiments, the magnetic element can have a number of linear segments or a curved profile. In another embodiment, multiple magnetic elements are magnetized by a single write line. The multiple magnetic elements are arranged such that remnant magnetic field stored in them can be cumulatively sensed. In another embodiment, the magnetic element is arranged to be magnetized in a single general direction, but is shaped such that magnetic flux lines emanate from it in different directions. The different directions are arranged to direct flux lines through the sensing region of a sensor, which measures their cumulative effect.

Non-volatile magnetic memory device

A ferromagnetic memory cell is disclosed having a base (), oriented in a horizontal plane, a bit (), made of a ferromagnetic material, and a sense/write line (), positioned proximate the bit () sufficient to detect the directed polarity of the bit when a first current is applied thereto, and to direct the polarity of the bit when a second larger current is applied thereto in a given direction. The bit () has a height that is oriented perpendicular to the horizontal plane of the base, and a polarity that can be directed along the height.

Growing community of inventors

Salt Lake City, UT, United States of America

James Stephenson