Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2005-07-13
2009-02-17
Chen, Tianjie (Department: 2627)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
Reexamination Certificate
active
07492555
ABSTRACT:
A method of manufacturing a thin-film magnetic head structure comprises the steps of preparing an insulating layer10; forming a first resist layer51provided with a first slit pattern51acorresponding to a very narrow groove part and a second slit pattern51bcorresponding to a temporary groove part integrally extending from the very narrow groove part along outer edges of a main depression onto the insulating layer10; etching the insulating layer10while using the first resist layer51as a mask; eliminating the first resist layer51; forming a second resist layer having an opening pattern corresponding to the main depression onto the insulating layer10; and etching the insulating layer10while using the second resist layer as a mask.
REFERENCES:
patent: 4656546 (1987-04-01), Mallory
patent: 6504675 (2003-01-01), Shukh et al.
patent: 6525904 (2003-02-01), Sasaki
patent: 6687096 (2004-02-01), Sasaki et al.
patent: 6742242 (2004-06-01), Sasaki
patent: 7140095 (2006-11-01), Matono
patent: 2002/0036871 (2002-03-01), Yano et al.
patent: 2004/0012884 (2004-01-01), Sato et al.
patent: 2004/0252415 (2004-12-01), Shukh et al.
patent: 2006/0002014 (2006-01-01), Sasaki et al.
patent: 2006/0077589 (2006-04-01), Sasaki et al.
patent: 2006/0077590 (2006-04-01), Sasaki et al.
patent: 2006/0103979 (2006-05-01), Sasaki et al.
patent: 2006/0103980 (2006-05-01), Sasaki et al.
patent: A 2003-203311 (2003-07-01), None
patent: A 2003-242607 (2003-08-01), None
patent: A 2004-094997 (2004-03-01), None
U.S. Appl. No. 11/073,225 to Sasaki et al.Magnetic Head for Perpendicular Magnetic Recording and Method of Manufacturing the Same. Mar. 7, 2005.
Araki Hironori
Ishizaki Kazuo
Ito Hiroyuki
Kamigama Takehiro
Sasaki Yoshitaka
Chen Tianjie
Headway Technologies Inc.
Oliff & Berridg,e PLC
SAE Magnetics (H.K. ) Ltd.
LandOfFree
Thin-film magnetic head structure, method of manufacturing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thin-film magnetic head structure, method of manufacturing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thin-film magnetic head structure, method of manufacturing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4072285