Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2011-03-08
2011-03-08
Evans, Jefferson (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S125300, C360S319000
Reexamination Certificate
active
07903371
ABSTRACT:
A perpendicular magnetic recording head includes a first magnetic layer having a main magnetic pole exposed at a medium-facing surface that faces a recording medium; a second magnetic layer that faces the first magnetic layer with a nonmagnetic layer interposed therebetween; and a coil layer for applying a recording magnetic field to the first magnetic layer. The second magnetic layer includes a relatively thick edge portion, whereby the edge-write magnetic field is reduced and the external magnetic field resistance is increased.
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Search Report for IDS for our case 06-00719.
Notification of Reason for Rejection for Japanese Patent Application 2006-199726, dispatched May 27, 2008, 2 pages.
Kameda Hiroshi
Kobayashi Kiyoshi
Morita Sumihito
Takahashi Toru
Toma Yusuke
Evans Jefferson
Hunton & Williams LLP
TDK Corporation
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