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. 23, 1994
Filed:
Mar. 18, 1992
Jeffery L Tallon, York Bay, NZ;
Donald M Pooke, Lower Hut, NZ;
Her Majesty the Queen in right of New Zealand, Lower Hutt, NZ;
Abstract
The invention comprises a process of heat treatment to produce a high T.sub.c superconductor with increased flux pinning. A precursor compound is subjected to temperature and oxygen pressure conditions at which the precursor compound decomposes or converts partially or completely to the high T.sub.c superconductor and precipitated non-superconducting compounds which are dispersed through the structure of the high T.sub.c superconductor and which are effective to pin lines of magnetic flux. The precursor compound may or may not itself be a high T.sub.c superconductor. In the YBCO system, 2-4-7 may be converted to 1-2-3 or 1-2-3 to 2-4-7 and flux pinning copper oxides dispersed through the structure, for example, various other transformations are possible.