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:
Mar. 16, 2004
Filed:
Oct. 28, 2002
Yamaha Corporation, , JP;
Abstract
A magnetic sensor comprises a thin-film-like magnetic tunnel effect element (magnetoresistive effect element) . A coil is disposed in a plane under the magnetic tunnel effect element and parallel to a thin-planar film surface of the element. The coil is a double spiral type coil which includes a first spiral conductor portion - and a second spiral conductor portion - . The magnetic tunnel effect element is disposed between a spiral center P of the first conductor portion - and a spiral center P of the second conductor portion - in a plan view. The first and second conductor portions - and - are connected such that electric currents in the same direction pass through a part of the first conductor portion - that overlaps the magnetic tunnel effect element in a plan view and through a part of the second conductor portion - that overlaps the magnetic tunnel effect element in a plan view.