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:
Apr. 19, 2016
Filed:
Jul. 11, 2012
Mircea Guna, North York, CA;
Mircea Guna, North York, CA;
DH Technologies Development Pte. Ltd., Singapore, SG;
Abstract
A method for operating a mass spectrometer having an ion trap over a plurality of selected mass-to-charge ranges constituting an overall mass-to-charge range is disclosed. For each of the plurality of selected mass-to-charge ranges the method comprises filling the ion trap with fragmented ions of the selected mass-to-charge ranges, cooling the fragmented ions trapped in the ion trap for a first cooling period, applying an RF voltage and a resolving direct current voltage to the ion trap for eliminating any remaining fragmented ions outside the selected ion mass-to-charge range and retaining ions within the selected ion mass-to-charge range, cooling the retained ions in the ion trap for a second cooling period, and scanning the retained ions out of the ion trap and detecting the ions released therefrom.