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:
Aug. 11, 1998
Filed:
Apr. 23, 1996
Applicant:
Inventors:
Daniel A Nepela, San Jose, CA (US);
Amritpal S Rana, Fremont, CA (US);
Assignee:
Read-Rite Corporation, Milpitas, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 66 ; 360113 ;
Abstract
A magnetoresistive head achieves maximum signal output with minimal electromigration by use of two increased direct currents with different polarities which are directed periodically through a magnetoresistive element in opposite directions, with minimal long term directional diffusion for minimizing electromigration and for increasing the signal output. The magnetoresistive element defines two magnetic centers MC.sup.+ and MC.sup.- that correspond to the polarities of the two currents, and the magnetic centers are positioned at optimal magnetic locations.