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:
Oct. 24, 2000
Filed:
Nov. 20, 1997
Applicant:
Inventors:
Yuji Kondo, Tokyo, JP;
Akihiro Yano, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313414 ; 313309 ; 313336 ; 313306 ;
Abstract
A ceramic substrate for mounting a field emission cathode is secured on the lower surface of a metal flange for assembly of an electron lens of a cathode ray tube, and the mounting position of the field emission cathode on the ceramic substrate is determined with reference to the metal flange.