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:
Jun. 12, 2018
Filed:
Sep. 12, 2014
Dh Technologies Development Pte Ltd., Singapore, SG;
James Hager, Mississauga, CA;
Christopher M Lock, Richmond Hill, CA;
DH Technologies Development Pte. Ltd., Singapore, SG;
Abstract
A mass spectrometer apparatus and method for conducting simultaneous MS/MS analysis including: a device to select a precursor ion having a specified m/z; a gas-filled collision cell; an RF-only multipole mass spectrometer, the mass spectrometer having a generator attached thereto for generating at least two auxiliary AC fields in the RF-only multipole mass spectrometer; a gate for providing a repulsive DC or AC barrier downstream to an exit of the RF-only multipole mass spectrometer; an ion detection system situated downstream from the DC or AC barrier for measuring an ion current derived from ions that overcome the repulsive barrier. The mass spectrometer may also be configured so that each of the auxiliary AC fields are generated by the introduction of individual auxiliary AC frequencies and each frequency is amplitude modulated at a unique frequency.