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:
Mar. 28, 2000
Filed:
Mar. 08, 1995
Applicant:
Inventor:
Pierre Vaudaine, Seyssins, FR;
Assignee:
Commissariat a l'Energie Atomique, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313309 ; 313336 ; 313351 ; 3131693 ; 3131694 ;
Abstract
A microtip emissive cathode electron source has a series of cathode conductors carrying a plurality of microtips and a series of grids. Each of the electrodes of at least one of the series is in contact with a resistive layer having meshes, a group of the microtips facing each mesh. A conductive element faces the interior of each mesh in front of the group of microtips corresponding to the mesh and is in contact with the resistive layer.