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. 09, 1995
Filed:
Jul. 30, 1991
Toshihiko Yoshimura, Ibaraki, JP;
Tasuku Shimizu, Hitachi, JP;
Yuichi Ishikawa, Mito, JP;
Masahiro Otaka, Hitachi, JP;
Yuko Koguchi, Solwez, ZM;
Kunio Enomoto, Ibaraki, JP;
Kunio Hasegawa, Katsuta, JP;
Makoto Hayashi, Hitachi, JP;
Kazuo Takaku, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A fluxmeter includes an application unit for applying a magnetic field, a superconducting quantum interference element and a flux transmitting circuit. The flux transmitting circuit includes a pickup coil formed of a superconducting print coil and a core for the pickup coil. The core is formed of a soft magnetic material. The core serves to suppress the leakage of magnetic flux to magnetically couple the pickup coil and the superconducting quantum interference element efficiently to improve the sensitivity and resolution of the fluxmeter. The pickup coil may be manufactured by photolithography, sputtering, laser beam deposition, MBE deposition, MOCVD or spray pyrolysis.