Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Reexamination Certificate
2007-02-13
2010-06-15
Patel, Paresh (Department: 2829)
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
Reexamination Certificate
active
07737678
ABSTRACT:
A current sensor capable of detecting current magnetic fields generated by a current to be detected with high precision and stability while realizing a compact configuration is provided. The current sensor includes: a conductor generating a current magnetic field in accordance with supplied current to be detected; a magnetoresistive element including a free layer having a magnetization direction that varies in accordance with the current magnetic field, a pinned layer having the magnetization direction that is pinned to a direction orthogonal to the magnetization direction of the free layer under no current magnetic field, and an intermediate layer provided between the free layer and the pinned layer; and a bias applying means for applying, to the magnetoresistive element, a bias magnetic field along a direction same with the magnetization direction of the free layer under no current magnetic field.
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Feb. 9, 2010 Office Action issued in Japanese Application No. JP2006-038587.
Oliff & Berridg,e PLC
Patel Paresh
TDK Corporation
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