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:
Feb. 23, 1999
Filed:
Mar. 24, 1993
Seiichi Tokunaga, Tsukuba, JP;
Ryokan Yuasa, Tsukuba, JP;
Shuji Fujiwara, Tsukuba, JP;
Masao Nakao, Tsukuba, JP;
Hiroaki Furukawa, Tsukuba, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
An oxide film having a desired pattern is first formed on a magnesia substrate. A superconducting oxide film is then formed on the exposed portion of the magnesia substrate and also on the oxide film. Thus, a tilt-boundary junction is formed in the boundary between the superconducting oxide film portion on the magnesia substrate and the superconducting oxide film portion on the oxide film. The tilt-boundary junction functions as a Josephson junction. By utilizing the Josephson junction in the tilt-boundary junction, a SQUID pattern can be formed on the magnesia substrate to provide a SQUID device.