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:
Apr. 16, 2002
Filed:
Apr. 03, 2000
Klaus Marx, Stuttgart, DE;
Hartmut Kittel, Weissach-Flacht, DE;
Franz Jost, Stuttgart, DE;
Martin Freitag, Gerlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A magnetoresistive sensor element, in particular an angle sensor element, has a first, magnetic layer ( ) whose direction of magnetization represents a reference direction, a second, nonmagnetic layer ( ) formed on the first layer ( ), a third magnetic layer ( ), formed on the second layer ( ), whose direction of magnetization can be varied by an external magnetic field, and an additional layer consisting of a current conductor ( ) for selective orientation of the direction of magnetization of the first layer ( ). A current flow direction of an electric current that passes through the current conductor ( ) can be switched to change the magnetization direction of the first magnetic layer ( ) to create different reference directions. An insulation layer ( ) for galvanic separation of the first magnetic layer ( ) from the additional layer ( ) is also provided between them.