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:
Sep. 21, 1999
Filed:
Aug. 04, 1997
Applicant:
Inventors:
Koichi Yokosawa, Kokubunji, JP;
Shinya Kuriki, Sapporo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; H01L / ; H01F / ;
U.S. Cl.
CPC ...
505162 ; 257 33 ; 324248 ;
Abstract
Pickup coils constructed by superconductors and a SQUID part are formed on a single substrate. The pickup coils are parallelly connected to two other superconductors (inductance of the SQUID ring) in a SQUID ring, which consists of two Josephson junctions and two superconductive lines. Each of the superconductors can be a superconductive line of one loop or a washer type coil. Each pickup coil occupies about one half of the area of the substrate and the SQUID and the pickup coils are symmetrical with respect to the center line of the substrate.