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:
Apr. 25, 1978
Filed:
May. 19, 1975
Applicant:
Inventors:
Jean Claude Peuzin, Eybens, FR;
Michel Tasson, Seyssinet Pariset, FR;
Assignee:
Commissariat a l'Energie Atomique, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
156603 ; 156 / ; 29 2535 ; 148121 ; 252 629 ; 365117 ;
Abstract
In a method of polarization of a ferroelectric material having a Curie point at a temperature T.sub.c, the material is brought to a temperature above T.sub.c, subjected to a temperature gradient and then returned to a temperature below the Curie point. No electric field is applied, because the temperature gradient itself has been found to produce ferroelectric polarization under the described circumstances.