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. 31, 2020
Filed:
Nov. 09, 2016
Applicant:
Hitachi High-technologies Corporation, Minato-ku, Tokyo, JP;
Inventors:
Kiyomi Yoshinari, Tokyo, JP;
Yasushi Terui, Tokyo, JP;
Assignee:
Hitachi High-Technologies Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 49/00 (2006.01); H01J 49/06 (2006.01); H01J 49/42 (2006.01);
U.S. Cl.
CPC ...
H01J 49/063 (2013.01); H01J 49/005 (2013.01); H01J 49/4215 (2013.01);
Abstract
Acceleration of decelerated ions and a reduction in the velocity dispersion width of decelerated ions are both achieved, whereby the sensitivity of detected ion sensitivity is improved and resolution is improved. The distance dx between at least one set of facing rod-shaped electrodes among rod-shaped electrodes (--) to (--) differs at the inlet part at which ions enter and the outlet part at which ions exit, and the distance dx between the at least one set of facing rod-shaped electrodes is gradually reduced or increased from the inlet part toward the outlet part.