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:
Mar. 15, 1990
Applicant:
Inventors:
Qamar A Shams, Cincinnati, OH (US);
Allen M Hermann, Golden, CO (US);
Zhengzhi Sheng, Fayetteville, AR (US);
Assignee:
The University of Arkansas, Little Rock, AR (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
505-1 ; 505732 ; 505742 ; 427 62 ; 4271263 ; 427194 ; 427190 ; 427341 ; 4272481 ;
Abstract
The present invention provides a method for making Tl-Ca-Ba-Cu-O superconductive materials in a film shape. Pursuant to the method, after placing a Ca.sub.2 Ba.sub.2 Cu.sub.3 O.sub.7 powder onto some suitable substrate, such as platinum or copper, the substrate and powder are rolled between two rollers until a desired thickness is achieved. The film can then be taken off the substrate. Thallium oxide is then evaporated on the precursor film to make superconductive films. The Tl.sub.2 O.sub.3 can be evaporated in a furnace or vacuum.