Dynamic magnetic information storage or retrieval – Head – Coil
Reexamination Certificate
2007-07-19
2008-10-28
Miller, Brian E (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Coil
C360S123060, C360S125040, C360S125060
Reexamination Certificate
active
07443632
ABSTRACT:
A magnetic head is disclosed that has first and second substantially flat soft magnetic pole layers that are magnetically coupled together in a backgap region that is removed from the medium-facing surface; a soft magnetic pedestal having a leading edge and a trailing edge, the trailing edge adjoining the second pole layer adjacent to the medium-facing surface, the leading edge defining a throat area that is spaced from the first pole layer by a submicron nonferromagnetic gap and defining an apex area that is spaced from the first pole layer by a greater separation than the gap, the throat area meeting the apex area at a throat height; and a plurality of substantially parallel, electrically conductive sections disposed between the first and second pole layers, the conductive sections disposed in a single layer that is aligned along a plane that intersects the pedestal and the backgap region.
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Liu Francis H.
Stoev Kroum S.
Wang Yugang
Miller Brian E
Prejean, Esq. Jonathan E.
Strategic Patent Group
Western Digital (Fremont) , LLC
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