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. 12, 2005
Filed:
Apr. 23, 2003
Applicants:
Jean-luc Ricaud, Dijon, FR;
Gérard Proudhon, Chevigny Saint Sauveur, FR;
Inventors:
Jean-Luc Ricaud, Dijon, FR;
Gérard Proudhon, Chevigny Saint Sauveur, FR;
Assignee:
Thomson Licensing S. A., Boulogne-Billancourt, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J001/20 ;
U.S. Cl.
CPC ...
Abstract
Cathode comprising a substrate () supporting a cathode emissive coating, comprising what is called an emissive central zone () and what is called a nonemissive peripheral zone (); according to the invention: In this way it is possible to significantly limit the drift in cut-off voltage, while still maintaining good maximum emission performance in DC mode and in pulse mode.