Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-08-07
2007-08-07
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603120, C029S603180, C029S603130, C029S603150, C216S022000, C216S041000, C216S066000, C216S089000, C204S192200, C204S192350
Reexamination Certificate
active
10884368
ABSTRACT:
A method and apparatus for defining leading edge taper of a write pole tip is disclosed. The fabrication process uses reactive ion etching to fabricate LET with tight control of the placement of LET's edge and to achieve higher angle for providing a higher effective write field at the pole tip while minimizing ATI for high-density perpendicular recording. The placement of a resist's edge is used to define the LET's edge and a CMP process is used to provide a planar surface for the fabrication of the write pole.
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Le Quang
Li Jui-Lung
Winton Yvette Chung Nga
Zhang Sue Siyang
Zheng Yi
Chambliss Bahner & Stophel PC
Hitachi Global Storage Technologies - Netherlands B.V.
Lynch David W.
Tugbang A. Dexter
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