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. 24, 2009
Filed:
Sep. 20, 2005
Applicants:
Jun Iba, Kanagawa-ken, JP;
Hisanobu Azuma, Kanagawa-ken, JP;
Inventors:
Jun Iba, Kanagawa-ken, JP;
Hisanobu Azuma, Kanagawa-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 9/50 (2006.01); H01J 9/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a producing method for an electron beam emitting device, a position of a stray emission source constituting an unnecessary electron emitting part on a cathode substrate is detected, and an energy is locally applied to the detected position thereby eliminating the stray emission source, thereby providing an excellent electron beam apparatus without a deterioration in a constituent member or a trouble by an accidental discharge.