Magnetic head having a notched pole piece structure

Details Magnetic head having a notched pole piece structure Magnetic head having a notched pole piece structure

2008-03-11

2009-02-10

Cao, Allen T (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07489474

ABSTRACT:
A magnetic head includes a first pole piece; a second pole piece; a pedestal formed over a central portion of the first pole piece; a gap separating the pedestal from the second pole piece; and at least one of a top straight walled portion over the pedestal and a bottom straight-walled portion underneath the pedestal, the pedestal being notched with angled side walls.

REFERENCES:
patent: 5438747 (1995-08-01), Krounbi et al.
patent: 5639509 (1997-06-01), Schemmel
patent: 5649351 (1997-07-01), Cole et al.
patent: 5719730 (1998-02-01), Chang et al.
patent: 5805391 (1998-09-01), Chang et al.
patent: 5809637 (1998-09-01), Rottmayer
patent: 5901432 (1999-05-01), Armstrong et al.
patent: 5949625 (1999-09-01), Sato et al.
patent: 6024339 (2000-02-01), Gates
patent: 6029339 (2000-02-01), Chang et al.
patent: 6043960 (2000-03-01), Chang et al.
patent: 6069775 (2000-05-01), Chang et al.
patent: 6119331 (2000-09-01), Chang et al.
patent: 6130809 (2000-10-01), Santini
patent: 6141857 (2000-11-01), Furusawa et al.
patent: 6201670 (2001-03-01), Chang et al.
patent: 6400526 (2002-06-01), Crue et al.
patent: 6493191 (2002-12-01), Cain et al.
patent: 6539610 (2003-04-01), Lo et al.
patent: 6552874 (2003-04-01), Chen et al.
patent: 6618223 (2003-09-01), Chen et al.
patent: 6693769 (2004-02-01), Hsu et al.
patent: 6721138 (2004-04-01), Chen et al.
patent: 6724572 (2004-04-01), Stoev et al.
patent: 6785955 (2004-09-01), Chen et al.
patent: 6947255 (2005-09-01), Hsiao et al.
patent: 7086139 (2006-08-01), Lee et al.
patent: 7391591 (2008-06-01), Hsiao et al.
patent: 2002/0181162 (2002-12-01), Chen et al.
patent: 2003/0179497 (2003-09-01), Harris et al.
Office Action Summary from U.S. Appl. No. 10/105,119 mailed on Dec. 13, 2004.
Notice of Allowance from U.S. Appl. No. 10/105,119 mailed on May 12, 2005.
Office Action Summary from U.S. Appl. No. 11/202,712 mailed on Feb. 6, 2008.

Affiliated with

Also associated with

Rating

Magnetic head having a notched pole piece structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic head having a notched pole piece structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic head having a notched pole piece structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4061783