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:
May. 10, 2011
Filed:
Apr. 18, 2007
Sophie Guillemet, Lacroix Falgarde, FR;
Madona Boulos, Toulouse, FR;
Bernard Durand, Fourquevaux, FR;
Thierry Lebey, Lacroix Falgarde, FR;
Quang Nguyen, Toulouse, FR;
Sophie Guillemet, Lacroix Falgarde, FR;
Madona Boulos, Toulouse, FR;
Bernard Durand, Fourquevaux, FR;
Thierry Lebey, Lacroix Falgarde, FR;
Quang Nguyen, Toulouse, FR;
Centre National de la Recherche Scientifique (CNRS), Paris, FR;
Universite Paul Sabatier Toulouse III, Toulouse, FR;
Abstract
The present invention relates to a method of preparing ceramics based on lanthanum-doped barium titanate, which comprises the following steps: (a) flash sintering of lanthanum-doped barium titanate powders; and (b) heat treatment of the material thus obtained, in an air atmosphere or in an oxidising atmosphere. The invention also relates to ceramics based on lanthanum-doped barium titanate, possessing a very high real part of the relative dielectric permittivity, and to their use for obtaining capacitors of high capacitance and high capacitance per unit volume for high-voltage withstand capability.