Track sanders – Sand feeders – Chain
Reexamination Certificate
2005-11-16
2008-11-25
Kim, Paul D (Department: 3729)
Track sanders
Sand feeders
Chain
C029S417000, C029S603120, C029S603130, C029S603150, C029S603180, C156S268000, C156S345420, C360S230000, C360S237100, C438S455000, C438S458000, C438S976000, C451S005000, C451S041000
Reexamination Certificate
active
07455332
ABSTRACT:
The overcoat of a slider (alumina) is recessed relative to the slider ABS by a non-abrasive CMP process sufficiently to prevent thermal protrusion of the overcoat during subsequent slider use in a hard disk drive. The CMP process involves the oscillatory and rotational compressional contact between the ABS surface of the slider and a polymerically pre-treated compliant pad that is sprayed by an aqueous alkali lubricating solution having a pH between about 9 and 10. The overcoat is thereby also softened by the lubricating solution and removed by the compressional contact and no use of abrasives is required.
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Ayala Rudy
Jose Winston
Mahadev Niraj
Ackerman Stephen B.
Kim Paul D
SAE Magnetics (HK) Ltd.
Saile Ackerman LLC
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