Dynamic magnetic information storage or retrieval – Head – Coil
Reexamination Certificate
2006-06-28
2009-12-15
Renner, Craig A (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Coil
C360S123350, C360S123560
Reexamination Certificate
active
07633710
ABSTRACT:
A magnetic head including an induction coil having coil turns that are disposed between two magnetic poles of the magnetic head. The coil turns include a lower coil turn portion and an upper coil turn portion. In fabricating the induction coil, the lower coil turn portion is fabricated first, and the upper coil turn portion is fabricated directly upon the lower coil turn portion. The lower coil turn portion may be fabricated using damascene methods and the upper coil turn portion may be fabricated utilizing photolithographic methods. The lower coil turn portion and the upper coil turn portion of the induction coil turns are electrically connected, such that the thickness of the overall induction coil turns is increased. As a result, the electrical resistance of the coil turns is decreased, and heat generated in the coil is reduced.
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Lee Edward Hin Pong
Nikitin Vladimir
Hitachi Global Storage Technologies B.V.
Renner Craig A
Zilka-Kotab, PC
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