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:
Oct. 24, 2023
Filed:
Feb. 05, 2018
Shimadzu Corporation, Kyoto, JP;
Masahiro Ikegami, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
A matrix-derived peak information acquisition unit () creates a peak list that summarizes various ions derived from a matrix and their theoretical m/z values based on a result of analysis of a sample of only a matrix, and stores the peak list in a matrix-derived peak information storage unit (). When an actually-measured mass spectrum of a target sample is obtained, a mass calibration reference peak detection unit () uses a peak list corresponding to a matrix used for analysis to identify an ion peak derived from a matrix appearing in the actually-measured mass spectrum. A mass calibration information calculation unit () obtains mass calibration information from an actually-measured m/z value and a theoretical m/z value of the identified peak, and a mass calibration processing unit () uses the mass calibration information to correct an m/z value of a peak derived from a target compound on the actually-measured mass spectrum. In this manner, accurate mass calibration can be performed without using a standard substance or even in a case where an ion derived from a standard substance cannot be observed with sufficient intensity.