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:
Aug. 17, 1993
Filed:
Oct. 31, 1990
Hirohiko Murakami, Koshigaya, JP;
Junya Nishino, Yokohama, JP;
Seiji Yaegashi, Urawa, JP;
Yu Shiohara, Tokyo, JP;
Shoji Tanaka, Tokyo, JP;
Kabushiki-Gaisha Arubakku Kohporehtosentah, all of, JP;
Nippon Mining Co., Ltd., all of, JP;
Ishikawajima-Harima Jukogyo Kabushiki Kaisha, all of, JP;
The International Superconductivity Technology Center, all of, JP;
Abstract
A method of producing a superconductor of metal oxides which includes subjecting an organic solvent solution containing (a) an alkoxide of a rare earth element, (b) an alkoxide of an alkaline earth metal and (c) copper alkoxide or cupric nitrate to hydrolysis in the presence of water and nitrate ions, thereby forming a mixture containing a gel-like substance. The gel-like substance is, after being dried and formed into a desired shape, pyrolyzed at a temperature of 600.degree.-950.degree.C. to form a superconductor of oxides of the rare earth, the alkaline earth metal and copper.