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:
Dec. 27, 2011
Filed:
Dec. 11, 2006
Hélène Joisten, Grenoble, FR;
Robert Cuchet, Monestier de Percy, FR;
Bernard Viala, Sassenage, FR;
Marcel Audoin, Noyarey, FR;
Rachid Hida, Grenoble, FR;
Hélène Joisten, Grenoble, FR;
Robert Cuchet, Monestier de Percy, FR;
Bernard Viala, Sassenage, FR;
Marcel Audoin, Noyarey, FR;
Rachid Hida, Grenoble, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
A miniature magnetic core includes at least one bar magnet having, in the demagnetized state, a plurality of magnetic domains separated by magnetic walls, the bar magnet having permanent discontinuities placed at least approximately at the probable locations of at least some of these magnetic walls in the absence of these permanent discontinuities. A miniature sensor includes a miniature core that cooperates with at least one excitation coil and at least one detection coil. A method for manufacturing the magnetic core includes identifying the probable location of the magnetic walls, depositing at least a thin film of magnetic material on a support in order to form the core and producing, in said core, discontinuities approximately at the identified locations of the walls.