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.:
Date of Patent:
Sep. 17, 2002
Filed:
Nov. 22, 1999
Haruo Urai, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
The present invention provides a yoke type magnetoresistive (MR) composite thin film head having no other gap than the recording/reproducing gap so as to increase the recording characteristics and reproduction characteristics. A magnetic gap is formed between a front portion of an upper pole and a front portion of a lower pole whereas a rear portion of the upper pole and a rear portion of the lower pole are magnetically connected to form a magnetic flux path. A mesa pattern is provided apart from the magnetic gap and a magnetoresistive element (MR pattern) is arranged on a front slope of the mesa pattern The upper pole and the lower pole are magnetically bridged via the MR element so as to form a separate magnetic flux flow path via the MR element This separate magnetic flux flow path is used for reproduction of a magnetic recording information. A write-in coil is arranged on the mesa pattern The upper pole and the lower pole have no gap in the midst of the poles, increasing the ratio of generation of the recording magnetic field. A lead pattern is derived from the front slope and via a side slope