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:
Feb. 11, 1992
Filed:
Sep. 24, 1990
George E Whitwell, Campbell Hall, NY (US);
Meiylin F Antezzo, Carmel, NY (US);
Akzo NV, Arnhem, NL;
Abstract
A process for forming an alkoxide-derived yttrium-barium-copper oxide high temperature superconductor thin film by sol-gel processing is disclosed. It comprises first forming a thin film comprising solubilized yttrium and barium alkoxides and copper aminoalkoxide, under an inert gas atmosphere, on a non-reactive substrate, the amount of copper amino alkoxide being in excess of the stoichiometric amount to compensate for losses due to volatility of the copper amino alkoxide. The coating composition is then heated first in a moisture laden inert gas atmosphere, to hydrolyze the alkoxides, to temperatures in excess of the formation temperature of the superconductor. It is thereafter calcined in an oxygen atmosphere at higher temperatures to form the high temperature superconductor thin film.