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:
Dec. 12, 1995
Filed:
Mar. 29, 1993
Akihiro Kondoh, Kobe, JP;
Masato Murakami, Tokyo, JP;
Hiroshi Takaichi, Tokyo, JP;
Naoki Koshizuka, Tokyo, JP;
Shoji Tanaka, Tokyo, JP;
Shoichi Kagiya, Tokyo, JP;
International Superconductivity Technology Center, Tokyo, JP;
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Hokuriku Electric Power Co., Toyama, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A method for producing an REBaCuO oxide superconductor having large magnetic levitation force, where RE is a rare earth element selected from the group consisting of Y, Sm, Eu, Gd, Dy, Ho, Er, and Yb, involves the steps of using a raw material mixture as the starting feed, heating the raw material mixture for partial melting, followed by cooling and solidification, pulverizing and mixing the resulting solid, shaping the resulting mixture into a given shape, placing or embedding nucleates on or in the resulting shape, followed by heating for partial melting, and cooling the resulting partial melt to a substantial temperature at which a superconducting phase starts to form, followed by slow cooling, whereby the superconducting phase is preferentially formed and grown from a nucleation site.