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:
Jul. 17, 2018
Filed:
Dec. 07, 2016
Applicant:
Horiba Stec, Co., Ltd., Kyoto, JP;
Inventors:
Assignee:
HORIBA STEC, CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 9/04 (2006.01); H01J 1/14 (2006.01); H01J 1/146 (2006.01); H01J 49/42 (2006.01);
U.S. Cl.
CPC ...
H01J 1/146 (2013.01); H01J 9/042 (2013.01); H01J 49/4215 (2013.01);
Abstract
In order to provide a thermionic emission filament capable of ensuring a long life and improving an analysis accuracy of a mass spectrometer using the thermionic emission filament, in the thermionic emission filament including a core member through which electric current flows and an electron emitting layer which is formed so as to cover a surface of the core member, the electron emitting layer is configured to have denseness for substantial gas-tight integrity.