Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2007-05-22
2007-05-22
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603120, C029S603140, C029S603230, C205S119000, C205S223000, C360S122000, C360S125020
Reexamination Certificate
active
11041266
ABSTRACT:
A main pole layer of a magnetic head includes a first portion disposed at a distance from a medium facing surface, and a second portion that is smaller in thickness than the first portion and disposed between the first portion and the medium facing surface. The step of forming the main pole layer includes the steps of forming a plating layer such that one of ends of the plating layer closer to the medium facing surface is located at a position that coincides with the position of one of ends of the first portion closer to the medium facing surface; forming a first nonmagnetic layer to cover the plating layer; polishing the first nonmagnetic layer and the plating layer; forming a space by removing the plating layer; forming a magnetic layer, which will be the main pole layer, in the space and on the top surface of the first nonmagnetic layer; forming a second nonmagnetic layer to cover the magnetic layer; and polishing the second nonmagnetic layer and the magnetic layer.
REFERENCES:
patent: 5427675 (1995-06-01), Toyama et al.
patent: 6687084 (2004-02-01), Takahashi et al.
patent: 6710973 (2004-03-01), Okada et al.
patent: 2003/0193744 (2003-10-01), Takahashi et al.
patent: 2004/0150910 (2004-08-01), Okada et al.
patent: 9-153204 (1997-06-01), None
patent: A 2002-92821 (2002-03-01), None
patent: A 2002-133610 (2002-05-01), None
patent: A 2002-197615 (2002-07-01), None
patent: A 2003-006811 (2003-01-01), None
Sahami et al., “The Effect of Track Width and Topography on Composition Uniformity of Electroplated Permolloy in Thin Film Heads”, IEEE Transactions on Magnetics, vol. 28, No. 5, Sep. 1992, pp. 2103-2105.
Aoki Susumu
Notsuke Yasuyuki
Roppongi Tetsuya
Watabe Yuichi
Oliff & Berridg,e PLC
TDK Corporation
Tugbang A. Dexter
LandOfFree
Method of manufacturing magnetic head for perpendicular... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing magnetic head for perpendicular..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing magnetic head for perpendicular... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3817657