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:
Dec. 09, 2008
Filed:
Mar. 23, 2007
Izumi Ogata, Ishioka, JP;
Shinya Ito, Hitachinaka, JP;
Shin-ichiro Nishimura, Sapporo, JP;
Kisaburo Deguchi, Sapporo, JP;
Yasuhiro Takegawa, Sapporo, JP;
Izumi Ogata, Ishioka, JP;
Shinya Ito, Hitachinaka, JP;
Shin-Ichiro Nishimura, Sapporo, JP;
Kisaburo Deguchi, Sapporo, JP;
Yasuhiro Takegawa, Sapporo, JP;
Hitachi High-Technologies Corporation, Tokyo, JP;
Abstract
The invention intends to determine a presence ratio between mixed compounds which are difficult to separate from each other by a separation unit and cannot be discriminated by MS. In a mass spectrometer with an MSanalysis function for ionizing a sample eluted from a separation unit for separating the sample into individual components, fragmenting an ion of a desired mass number, and performing a mass analysis of fragment ions, the mass spectrometer includes a database storing correlation information between an isomer presence ratio and a particular ion intensity ratio in a mass spectrum per isomer. An isomer ratio can be clarified even for a mixed sample of isomers, such as enantiomers, which are difficult to separate from each other by the separation unit and cannot be discriminated by MS.