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. 23, 2013
Filed:
Dec. 10, 2007
Pierre Legagneux, Le Mesnil Saint Denis, FR;
Ludovic Hudanski, Sevres, FR;
Jean-philippe Schnell, Paris, FR;
Dominique Dieumegard, Mareil-Marly, FR;
Pierrick Guiset, Palaiseau, FR;
Alfredo DE Rossi, Paris, FR;
Pierre Legagneux, Le Mesnil Saint Denis, FR;
Ludovic Hudanski, Sevres, FR;
Jean-Philippe Schnell, Paris, FR;
Dominique Dieumegard, Mareil-Marly, FR;
Pierrick Guiset, Palaiseau, FR;
Alfredo De Rossi, Paris, FR;
Thales, Neuilly-sur-Seine, FR;
Abstract
In an optically controlled cold-cathode electron tube, the emitters, of nanometer and/or micron size and of elongate shape, have a structure comprising a first material () of sp2-bonding carbon type and a metallic second material (), said first material being in contact with and surrounding said second material at its top and over the entire length of the emitter or at least part of said length starting from its top toward the base (b). The second material has a plasma frequency substantially equal to or greater than the frequency of the optical control wave.