Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2008-12-30
2011-12-27
Kim, Paul D (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603030, C029S603120, C029S603130, C029S603150, C029S603160, C360S121000, C360S122000, C360S317000, C451S005000, C451S041000
Reexamination Certificate
active
08082657
ABSTRACT:
A method for manufacturing a magnetic write head that allows the location of the flare point of a write pole to be accurately located relative to the air bearing surface. The method includes the construction of a lapping guide having an edge feature that is easily and accurately located relative to the flare point of the write pole. This edge feature provides an abrupt change in electrical resistance across the lapping guide at a point when lapping should be terminated. And, since this feature can accurately located relative to the flare point, this provides an easily discernable ending point for lapping.
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Lee Edward Hin Pong
Nikitin Vladimir
Yang Michael Ming Hsiang
Yao Yuan
Hitachi Global Storage Technologies - Netherlands B.V.
Kim Paul D
Zilka-Kotab, PC
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