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:
Jun. 16, 1992
Filed:
Apr. 09, 1991
Masaru Yamano, Hirakata, JP;
Atsuo Mizukami, Kasiwa, JP;
Masao Nakao, Tsukuba, JP;
Shingo Terakado, Tsukuba, JP;
Ryohkan Yuasa, Tsukuba, JP;
Masaaki Nemoto, Tsukuba, JP;
Hiromi Mukaida, Tsukuba, JP;
Kazuaki Shikiti, Tsukuba, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
The present invention relates to a superconducting material that is, substances having compositions expressed by empirical formulae Y.sub.1-x Ba.sub.x CuO.sub.3, YBa.sub.2 Cu.sub.3 O.sub.7 and LnBa.sub.2 Cu.sub.3 O.sub.7 and critical temperatures of 90 K. or more, and to a method of producing the same in which for example Y.sub.2 O.sub.3, BaCO.sub.3 and CuO are blended at a mixture molar ratio of 1:2:6 and the resulting mixture is molded under pressure followed by slowly cooling in an oxidizing atmosphere.