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:
Jan. 14, 1997
Filed:
Jun. 09, 1994
Applicant:
Inventors:
Gerard Duperray, La Norville, FR;
Denis Legat, Lisses, FR;
Assignee:
Alcatel Alsthom Compagnie General d'Electricite, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22F / ; C21D / ;
U.S. Cl.
CPC ...
419 29 ; 419-5 ; 419 22 ; 419 24 ; 419 28 ; 419 30 ; 419 45 ; 419 56 ;
Abstract
In a method for the manufacture of an encased high critical temperature superconducting wire by the 'powder in tube' method, prior to the introduction of a compressed rod of superconducting material into a silver tube, the rod is heat treated so that grains of unwanted phase are reabsorbed. The tube can be drawn more easily, and strands can be produced with a regular geometry and no defects. The wire is constituted by 15 .mu.m to 20 .mu.m thick filaments (30) with a form factor of more than 60.