Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-02-13
2007-02-13
Kim, Paul D. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603070, C029S603130, C029S603150, C029S603160, C029S603180, C205S119000, C205S122000, C360S121000, C360S122000, C360S125330, C360S317000, C451S005000, C451S041000
Reexamination Certificate
active
10825507
ABSTRACT:
A method of making a magnetic head involves providing a partially constructed magnetic head which has a top surface formed by a front P2pole tip, a back gap P2pedestal, and insulator materials disposed between the front P2pole tip and the back gap P2pedestal; forming a layer of selectively etchable materials over the top surface of the partially constructed magnetic head, the layer having a front edge that is recessed away from an air bearing surface (ABS); forming additional insulator materials over the selectively etchable material layer and over a front portion of the front P2pole tip; performing a chemical-mechanical polishing (CMP) to form a substantially coplanar top surface with the selectively etchable material layer and the additional insulator materials; etching to remove the selectively etchable material layer; and depositing yoke layer materials over the resulting structure.
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Preliminary amendment for divisional application U.S. Appl. No. 10/156,633.
Hitachi Global Storage Technologies - Netherlands B.V.
Kim Paul D.
Oskorep, Esq. John J.
Zises Matthew
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