Invention Grant
- Patent Title: Method and device for multiple transition monitoring
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Application No.: US17805482Application Date: 2022-06-06
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Publication No.: US12255059B2Publication Date: 2025-03-18
- Inventor: Stefan Quint , Florian Schweinberger , Benjamin Tiemann
- Applicant: Roche Diagnostics Operations, Inc.
- Applicant Address: US IN Indianapolis
- Assignee: Roche Diagnostics Operations, Inc.
- Current Assignee: Roche Diagnostics Operations, Inc.
- Current Assignee Address: US IN Indianapolis
- Agency: Taft Stettinius & Hollister LLP
- Priority: EP19216963 20191217
- Main IPC: H01J49/42
- IPC: H01J49/42

Abstract:
A method for multiple transition monitoring of at least one analyte in a sample using a quadrupole mass analyzer is provided and comprises at least one voltage application step, wherein a direct current (DC) voltage and a radio frequency (AC) voltage are applied between two pairs of electrodes of at least one mass filter of the analyzer, wherein the AC voltage has an amplitude VAC and the DC voltage has an applicable voltage VDC, wherein a supplementary AC voltage is superimposed on top of the AC and the DC voltage, wherein an amplitude ΔVDC of the supplementary AC voltage is ≤ V DC , max 2 b + 1 , wherein VDC,max is a maximum voltage output of the DC voltage and b is a bit size of at least one electronics board of the mass filter of the analyzer; and wherein at least one transition of the analyte is determined with at least one detector of the analyzer.
Public/Granted literature
- US20220319827A1 METHOD AND DEVICE FOR MULTIPLE TRANSITION MONITORING Public/Granted day:2022-10-06
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