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. 20, 2010
Filed:
Feb. 18, 2003
Jean Dijon, Champagnieu, FR;
Adeline Fournier, Novt Saint Martin, FR;
Brigitte Montmayeul, Bernin, FR;
Jean Dijon, Champagnieu, FR;
Adeline Fournier, Novt Saint Martin, FR;
Brigitte Montmayeul, Bernin, FR;
Commissariat a l'Energie Atomique, Paris, FR;
Abstract
This invention relates to a triode type cathode structure comprising, in superposition, an electrode forming a cathode () and supporting means made of an electron emitting material in the form of a layer (), an electrical insulation layer () and a grid electrode (), an opening () formed in the grid electrode and in the electrical insulation layer exposing the means made of an electron emitting material. The means made of an electron emitting material () are located in the central part of the opening of the grid electrode (), this opening being in the form of a slit and the means made of an electron emitting material exposed by the slit being composed of elements aligned along the longitudinal axis of the slit.