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:
Jun. 03, 1997
Filed:
Apr. 14, 1995
Applicant:
Inventors:
Assignee:
Commissariat a l'Energie Atomique, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313309 ; 445 50 ;
Abstract
A process for the production of microtip electron sources and the products produced thereby. The process includes a first cleaning stage with a first wet chemical cleaning substage and/or a second plasma cleaning substage and a finishing stage using surface etching. A second cleaning stage using a wet chemical cleaning can also be used. The process uses a system of cathode conductors, grids superimposed an intermediate insulator and microtips deposited on the cathode conductors.