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:
Jan. 30, 2001
Filed:
Nov. 12, 1998
Applicant:
Inventor:
Gyeong Sang Lee, Kyungsangbuk-do, KR;
Assignee:
LG Electronics, Inc., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/14 ; H01J 1/906 ;
U.S. Cl.
CPC ...
H01J 1/14 ; H01J 1/906 ;
Abstract
Cathode in an electron tube, is disclosed, including an actinoid metal or actinoid metal compound added to either a thermion emission material layer or a base metal, or formed between the thermion emission material layer and the base metal, whereby improving an electron emission characteristic of the cathode, significantly.