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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6141859 B1

PDFFull Text
Date of Patent:
Nov. 07, 2000

Filed:

Jun. 29, 1999

Method for making a merged head device

Applicant:
Inventors:

Nobuyuki Ishiwata, Tokyo, JP;

Tsutomu Ishi, Tokyo, JP;

Kiyokazu Nagahara, Tokyo, JP;

Kazumasa Kumagai, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:

Sughrue, Mion, Zinn, Macpeak & Seas, PLLC

Primary Examiner:

Carl E Hall

Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
2960312 ; 2960314 ; 2960315 ;
Abstract

A merged head device which has: a slider main body with an air bearing surface to a magnetic medium; two magnetic shield films which are parallel disposed on a common plane with a predetermined interval and orthogonal to air flow on the downstream side of the air bearing surface of the slider main body; a magnetoresistive effect head which is disposed through a magnetic separating layer of an insulator between the two magnetic shield films; an inductive head which is composed of one magnetic pole film corresponding to one of the two magnetic shield films which is located downstream and the other magnetic pole film which is disposed through a magnetic gap on the other side of the one magnetic pole film where the magnetoresistive effect head does not exist, and recording is conducted by magnetic field which generates at the magnetic gap; and concave portions which are formed on both sides of the other magnetic pole film along the direction of the air flow on the air bearing surface of the slider main body so as to define a width of the other magnetic pole film; wherein the concave portions are filled with a non-magnetic material.

Find Patent Forward Citations

Ishiwata, Nobuyuki. (2000). Method for making a merged head device (U.S. Patent No. 6141859). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6141859

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