Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2008-07-29
2008-07-29
Davis, David D (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07405906
ABSTRACT:
A magnetoresistance effect element of the dual spin valve type using a current-perpendicular-to-the-plane (CPP) system where a sensing current flows perpendicular to the stacked faces of a plurality of conductive layers, the magnetoresistance effect element comprises a first unit which includes a free layer and a first pinning layer, a second unit which includes the free layer shared with the first unit and a second pinning layer, a first current control layer which is provided in the first unit and limits the flow quantity of the sensing current, and a second current control layer which is provided in the second unit and limits the flow quantity of the sensing current.
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Austrian Search Report dated Apr. 22, 2005 for Singapore Appln. No. 200404491-3.
Funayama Tomomi
Koui Katsuhiko
Takagishi Masayuki
Tateyama Kohichi
Davis David D
Kabushiki Kaisha Toshiba
Pillsbury Winthrop Shaw & Pittman LLP
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