Dynamic magnetic information storage or retrieval – Head – Coil
Reexamination Certificate
2007-10-09
2007-10-09
Klimowicz, William J (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Coil
C029S603230, C029S603250, C029S603180
Reexamination Certificate
active
10837386
ABSTRACT:
A a method for fabricating a structure, such as a magnetic head, having two coplanar metallic features of different compositions, both deposited on their own seed layers. The features may be made tall relative to their widths (ie. have a high aspect ratio), and are also very closely spaced. Only a single high-definition, critically aligned photolithographic procedure is used to create the critical structures, avoiding any problem with aligning features produced by multiple procedures. The method is applied to the production of the write structure of a magnetic read/write head, where a portion of the pole structure and the inductive coils are fabricated in the same plane with a close spacing and both having a vertical aspect ratio of more than about 2:1.
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Emilio Santini Hugo Alberto
Lille Jeffrey S.
Nguyen Son Van
Hitachi Global Storage Technologies - Netherlands B.V.
Zilka-Kotab, PC
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