Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-07-17
2010-06-01
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603130, C029S603180, C216S022000, C216S041000
Reexamination Certificate
active
07726009
ABSTRACT:
A method of fabricating a write head for perpendicular recording includes forming a pole layer on an undercoat layer, forming a mask over at least a portion of the pole layer, and forming the pole by removing material from the pole layer. The method further includes forming a first gap portion of a gap along a first side and a second side of the pole, forming a protective layer over at least a portion of the first gap portion, removing the mask, and removing the protective layer. The method further includes forming a second gap portion of the gap over at least a top surface of the pole and forming a shield over at least the second gap portion.
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M. Mallary et al., “One Terabit per Square Inch Perpendicular Recording Conceptual Design”, IEEE Transactions on Magnetics, vol. 38, No. 4, pp. 1719-1724, Jul. 2002.
Chen Benjamin
Liu Yinshi
Sin Kyusik
Yuan Hongping
Tugbang A. Dexter
Western Digital (Fremont) , LLC
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