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:
Mar. 17, 1992
Filed:
Apr. 07, 1988
Takahiko Kato, Hitachi, JP;
Katsuzo Aihara, Hitachiota, JP;
Jiro Kuniya, Hitachi, JP;
Yutaka Misawa, Katsuta, JP;
Yoshihide Wadayama, Sendai, JP;
Masahiro Ogihara, Katsuta, JP;
Toshikazu Nishino, Kawasaki, JP;
Ushio Kawabe, Tokyo, JP;
Haruhiro Hasegawa, Kokubunji, JP;
Kazumasa Takagi, Tokyo, JP;
Tokuumi Fukazawa, Tachikawa, JP;
Katsuki Miyauchi, Hino, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A process for controlling an oxygen content of a non-superconductive or superconductive oxide is provided, in which a beam of particles such as ions, electrons or neutrons or an electromagnetic radiation is applied to the non-superconductive or superconductive oxide of a perovskite type such as YBa.sub.2 Cu.sub.3 O.sub.7-x, thereby increasing or reducing the oxygen content of the oxide at the sites of oxygen in the crystal lattice of the oxide. Furthermore, a superconductive device such as a superconductive magnet, superconductive power transmission wire, superconductive transformer, superconductive shield, permanent current switch and electronic element is made by utilizing the process for controlling the oxygen concentration of the superconductive oxide.