Patent · US Active

Ion guide

US9536722B2 · kind B2 · utility

3Cited by

1References

17Claims

0Family size

Assignee

THERMO FISHER SCIENTIFIC (BREMEN) GMBH · DE

Inventors

Dmitry Grinfeld · Bremen, DE
Jan-Peter Hauschild · Eindhoven, NL
Wilko Balschun · Bremen, DE
Eduard V. Denisov · Bremen, DE
Alexander A. Makarov · Bremen, DE

Key dates

Filing date	Sep 19, 2013
Grant date	Jan 3, 2017
Priority date	—
Expiry date	Sep 19, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH05K1/02
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An ion guide for mass spectrometry comprising an electrode arrangement of at least two electrodes, at least one of which is an RF electrode, arranged adjacent to each other but spaced apart on a planar surface of a dielectric material and arranged at a distance from an ion flow path, wherein a portion of the dielectric surface is exposed between an adjacent pair of the spaced apart electrodes and wherein at least one electrode of said adjacent pair of electrodes is arranged to overhang the exposed portion of surface between them such that there is no direct line of sight from the ion flow path to the exposed portion of dielectric surface. The device enables RF guiding of ions accompanied by much reduced charging-up of dielectric surfaces and reduced amount of collisions of neutral species with electrodes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.