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:
May. 01, 2001
Filed:
Nov. 12, 1998
Applicant:
Inventors:
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 3/3035 ; H01L 3/922 ;
U.S. Cl.
CPC ...
G01R 3/3035 ; H01L 3/922 ;
Abstract
This magnetic sensor comprises a flux transformer,having a superconducting thin film,formed on a sapphire substrate,, and a SQUID,disposed on the flux transformer,opposite thereto. In this magnetic sensor, since the sapphire substrate,, which can be obtained in a large size, is used for the flux transformer,, even when the SQUID,is made smaller, the magnetic flux introduced from the flux transformer,into the SQUID,can be enhanced so as to increase the effective magnetic flux capturing area, whereby the detecting performance is improved, while the manufacturing cost can be reduced due to the smaller size of the SQUID