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. 07, 1994
Filed:
Apr. 13, 1992
Michiya Okada, Mito, JP;
Ryou Nishiwaki, Hitachi, JP;
Yoshihide Wadayama, Hitachi, JP;
Toshimi Matsumoto, Katsuta, JP;
Katsuzo Aihara, Hitachiota, JP;
Tomoichi Kamo, Ibaraki, JP;
Shinpei Matsuda, Ibaraki, JP;
Toshihide Nabatame, Hitachiota, JP;
Yukio Saito, Hitachi, JP;
Toyotaka Yuasa, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A high-temperature oxide superconductor is provided and comprises oxide crystals oriented in a certain direction, the oxide superconductor being substantially free of or containing a controlled amount of foreign phases, a non-superconducting phase and weak superconducting phase which are harmful for superconducting characteristics in the grains of the crystals and at the grain boundaries between the crystals. The foreign phases, if any, are finely and uniformly dispersed in the grains of the oxide crystals and at the grain boundaries. A wire made from the oxide superconductor, a coil from the wire, and a magnetic field generator from the coil are disclosed, the superconductor wire having only a single layer of oxide crystal grains in the thickness direction.