Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2007-04-03
2007-04-03
Blouin, Mark (Department: 2653)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
09581468
ABSTRACT:
A magnetic sensor including a ferromagnetic tunnel junction, comprises a free layer10a magnetic direction of which freely rotates, and a barrier layer11formed on the free layer and reduces a thickness in a first region, the free layer in a region corresponding to the first region functioning as a sensor portion for sensing an external magnetic field. Such magnetic sensor can provide magnetic sensors, magnetic heads and magnetic encoders having high sensitivity. Furthermore, such magnetic sensor can provide magnetic heads which are adaptable to high recording density of magnetic storage mediums, and hard disk devices of large storage capacities using the magnetic heads.
REFERENCES:
patent: 5206590 (1993-04-01), Dieny et al.
patent: 5325056 (1994-06-01), Shonowaki et al.
patent: 5650958 (1997-07-01), Gallagher et al.
patent: 5729410 (1998-03-01), Fontana, Jr. et al.
patent: 5862022 (1999-01-01), Noguchi et al.
patent: 5898547 (1999-04-01), Fontana et al.
patent: 6108177 (2000-08-01), Gill
patent: 791916 (1997-08-01), None
patent: 831541 (1998-03-01), None
patent: 872828 (1998-10-01), None
patent: 59-195312 (1984-11-01), None
patent: 63-229609 (1988-09-01), None
patent: 5-250631 (1993-09-01), None
patent: 7-73419 (1995-03-01), None
patent: 07073419 (1995-03-01), None
patent: 8-21166 (1996-03-01), None
patent: 08185612 (1996-07-01), None
patent: 9-106514 (1997-04-01), None
patent: 9-245318 (1997-09-01), None
patent: 09245318 (1997-09-01), None
patent: 9-251618 (1997-09-01), None
patent: 9-282616 (1997-10-01), None
patent: 09288807 (1997-11-01), None
patent: 10-4227 (1998-01-01), None
patent: 10-69609 (1998-03-01), None
patent: 0 831 541 (1998-03-01), None
Kikuchi Hideyuki
Kobayashi Kazuo
Sato Masashige
Blouin Mark
Fujitsu Limited
Greer Burns & Crain Ltd.
Heinz A. J.
LandOfFree
Magnetic sensor, magnetic head, magnetic encoder and hard... 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 sensor, magnetic head, magnetic encoder and hard..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic sensor, magnetic head, magnetic encoder and hard... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3734815