Dynamic magnetic information storage or retrieval – Head – Core
Reexamination Certificate
2007-09-11
2007-09-11
Klimowicz, William J (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Core
C360S122000
Reexamination Certificate
active
10836998
ABSTRACT:
A magnetic write head for a data storage device includes a pole piece layer; a pole tip structure formed over the pole piece layer; a trailing shield formed at least in part along an air bearing surface (ABS) of the magnetic head adjacent the pole tip structure; a non-magnetic gap layer formed between the trailing shield and the pole tip structure; a yoke structure formed over at least part of the trailing shield; and a notch formed in the yoke structure adjacent the pole tip structure. Advantageously, the notch reduces magnetic flux otherwise drawn by the yoke structure in the region directly adjacent the pole tip structure. A method of making the magnetic head is also disclosed.
REFERENCES:
patent: 4656546 (1987-04-01), Mallory
patent: 4740855 (1988-04-01), Diepers et al.
patent: 5075956 (1991-12-01), Das
patent: 5726841 (1998-03-01), Tong et al.
patent: 5805390 (1998-09-01), Takeura et al.
patent: 5920449 (1999-07-01), Tagawa
patent: 6067220 (2000-05-01), Ahmann et al.
patent: 6267903 (2001-07-01), Watanuki
patent: 6415500 (2002-07-01), Han et al.
patent: 6430010 (2002-08-01), Murdock
patent: 6470566 (2002-10-01), Hsiao
patent: 6631056 (2003-10-01), Asatani et al.
patent: 7009812 (2006-03-01), Hsu et al.
patent: 7057853 (2006-06-01), Okada et al.
patent: 2002/0066177 (2002-06-01), Takeda et al.
patent: 2003/0184920 (2003-10-01), Jarrett et al.
patent: 2003/0210501 (2003-11-01), Voldman
patent: 2005/0068671 (2005-03-01), Hsu et al.
patent: 2005/0128637 (2005-06-01), Johnston et al.
patent: 376459 (1990-07-01), None
patent: 59142717 (1984-08-01), None
patent: 60163221 (1985-08-01), None
patent: 61277710 (1987-08-01), None
patent: 6381617 (1988-04-01), None
patent: 63195818 (1988-08-01), None
patent: 6448217 (1989-02-01), None
patent: 210509 (1990-01-01), None
patent: 6180810 (1994-06-01), None
patent: 06180810 (1994-06-01), None
patent: 06301920 (1994-10-01), None
patent: 7225912 (1995-08-01), None
patent: 6381616 (1998-04-01), None
patent: 11086210 (1999-03-01), None
patent: 11120510 (1999-04-01), None
patent: 2003016609 (2003-01-01), None
Hitachi Global Storage Technologies - Netherlands B.V.
Klimowicz William J
Nader Rambod
Oskorep, Esq. John J.
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