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. 01, 2022
Filed:
Jun. 29, 2017
Shimadzu Corporation, Kyoto, JP;
Manabu Shimomura, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
Measurement of a standard sample is repeated under control of an analysis control unit () while a CD voltage applied to a conversion dynode () of a detection unit () is gradually changed by a CD voltage adjustment unit (). Then, every time a measured mass spectrum is obtained, a spectrum pattern determination unit () determines whether a pattern of the measured mass spectrum matches a pattern of a standard mass spectrum of a standard sample in a compound database (), and determines the CD voltage at the time of being regarded as matching to be the set value. When the pattern of the mass spectrum is adjusted by changing the voltage applied to the ion lens (), performance such as sensitivity is likely to be unstable due to stain on the lens electrode or the like, but since the detection unit () is unlikely to be affected by such a stain, unstable performance can be avoided.