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. 11, 2008
Filed:
Jan. 31, 2003
Myriam Pannetier, Bures sur Yvette, FR;
Claude Fermon, Orsay, FR;
Juha Simola, Helsinki, FI;
Commissariat Energie Atomique, Paris, FR;
Elekta Neuromag Oy, Helsinki, FI;
Abstract
The device for sensing a magnetic field comprises a closed superconducting pick-up loop () having a path width (d) etched out of a single layer superconducting thin film and provided with a constriction () having a width (w) of narrow dimension smaller than the path width (d). The closed superconducting pick-up loop () constitutes a flux-to-field transformer (FFDT). At least one magnetoresistive element () is placed on top of or below the superconducting thin film, is isolated from the superconducting thin film by a thin insulating layer and is located so that an active part of the magnetoresistive element () is at the location of the constriction () and has a width equal to or less than the width of the constriction (). The active part of the magnetoresistive element () is oriented so that the bias current in this active part is directed essentially along the constriction (), orthogonally to the width of narrow dimension.