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. 04, 2002
Filed:
Jul. 02, 1999
Applicant:
Inventors:
Assignee:
Futaba Corporation, Mobara, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 7/18 ;
U.S. Cl.
CPC ...
H01J 7/18 ;
Abstract
A vacuum container for a field emission cathode device capable of attaining manufacturing of the field emission cathode device with increased efficiency and enhancing durability thereof. The vacuum container includes a cathode-side substrate on which field emission cathodes are formed and an anode-side substrate arranged so as to be spaced from each other at a predetermined distance in a direction in which electrons are emitted, resulting in a space being defined therebetween. A gas or hydrogen emission material is arranged at at least one position including a position which is defined in said space or an additional space contiguous to said space and is farthest from said evacuation section.