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:
Jul. 21, 1992
Filed:
Dec. 21, 1990
Bernard Chevallier, Talence, FR;
Jean-Michel Dance, Pessac, FR;
Jean Etourneau, Pessac, FR;
Lucien Lozano, Carbon Blanc, FR;
Alain Tressaud, Pessac, FR;
Robert Tournier, Bilieu, FR;
Andre Sulpice, Grenoble, FR;
Jacques Chaussy, Echirolles, FR;
Pascal Lejay, Pont de Claix, FR;
Rhone-Poulenc Chimie, Courbevoie, FR;
Abstract
Ceramic superconductor materials, e.g., of rare earth/alkaline earth metal/transition metal/oxygen type, contain an effective stabilizing amount of fluorine atoms distributed therein in a concentration gradient decreasing from the external face surface of the material to the core region thereof; advantageously the fluorine atoms are principally distributed in an external protective diffusion barrier layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile