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:
Nov. 18, 2025
Filed:
Oct. 17, 2022
Thermo Fisher Scientific (Bremen) Gmbh, Bremen, DE;
Hamish Stewart, Bremen, DE;
Anastassios Giannakopulos, Bremen, DE;
Alexander Kholomeev, Bremen, DE;
Dmitry Grinfeld, Bremen, DE;
Alexander Makarov, Bremen, DE;
Christian Hock, Bremen, DE;
Matthias Biel, Bremen, DE;
Alexander Wagner, Bremen, DE;
Thermo Fisher Scientific (Bremen) GmbH, Bremen, DE;
Abstract
A mass spectrometer comprises: a first ion optical device in a relatively low gas pressure region; a second ion optical device in a relatively high gas pressure region, the first and second ion optical devices receiving respective RF voltages from respective RF power supplies for generating respective RF fields that confine ions in respective trapping regions of the ion optical devices; and a gas conductance restriction, restricting gas flow from the relatively high gas pressure region to the relatively low gas pressure region, the gas conductance restriction having an aperture to allow ions to pass from the second to the first ion optical device. The first and second RF power supplies are independent to allow the RF voltages for generating the first RF field to have a different amplitude from the RF voltages for generating the second RF field.