Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2005-07-26
2005-07-26
Kim, Paul (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S417000, C029S603130, C029S603140, C029S846000, C029S850000, C029S854000, C216S022000, C216S048000, C360S316000, C415S005000, C415S041000, C427S127000, C427S128000, C427S131000
Reexamination Certificate
active
06920684
ABSTRACT:
The fixed layers of all magnetoresistive elements that are formed on the same substrate are magnetized in the same direction. Chips including magnetoresistive elements are cut out individually from the substrate. A magnetic sensor is assembled by combining cut-out chips together with consideration given to the magnetization directions of the fixed layers of the magnetoresistive elements in the chips. In this manner, the fixed layers of the magnetoresistive elements are magnetized by a sufficiently strong magnetic field for magnetization, whereby an output signal having a large absolute value is obtained from the magnetoresistive elements.
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“Index phase output characteristics of magnetic rotary encoder using a magneto-resistive element”; Kikuchi, Y.; Nakamura, F.; Wakiwaka, H.; Yamada, H.; Magnetics, IEEE Transactions on , vol. 33, Issue: 5 , Sep. 1997; pp. 3370-3372.
Kikuchi Seiji
Shonai Yuichi
Tokunaga Ichiro
Alps Electric Co. ,Ltd.
Beyer Weaver & Thomas LLP
Kim Paul
LandOfFree
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