Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2004-07-01
2008-12-23
Blouin, Mark (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
Reexamination Certificate
active
07468864
ABSTRACT:
A pole layer has an end located in a medium facing surface, the end having: a first side close to a substrate; a second side located opposite to the first side; a third side connecting an end of the first side to an end of the second side; and a fourth side connecting the other end of the first side to the other end of the second side. The second side defines a track width. The end of the pole layer located in the medium facing surface has a width that decreases toward the first side. The pole layer is disposed in a groove of a pole-layer-encasing layer made of a nonmagnetic insulating material, with a nonmagnetic conductive film provided between the encasing layer and the pole layer. The pole layer incorporates: a first layer located closer to the surface of the groove; and a second layer located farther from the surface of the groove.
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Itoh Hiroyuki
Li Dong-Hong
Sasaki Yoshitaka
Tanemura Shigeki
Blouin Mark
Headway Technologies Inc.
Oliff & Berridg,e PLC
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