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:
Dec. 17, 2013
Filed:
Apr. 30, 2010
Roger Giles, West Yorkshire, GB;
Dimitris Papanastasiou, Athens, GR;
Roger Giles, West Yorkshire, GB;
Dimitris Papanastasiou, Athens, GR;
Shimadzu Corporation, Kyoto-Shi, JP;
Abstract
The present invention is concerned with an ion analysis apparatus for conducting differential ion mobility analysis and mass analysis. In embodiments, the apparatus comprises a differential ion mobility device in a vacuum enclosure of a mass spectrometer, located prior to the mass analyzer, wherein the pumping system of the apparatus is configure to provide an operating pressure of 0.005 kPa to 40 kPa for the differential ion mobility device, and wherein the apparatus includes a digital asymmetric waveform generator that provides a waveform of frequency of 50 kHz to 25 MHz. Examples demonstrate excellent resolving power and ion transmission. The ion mobility device can be a multipole, for example a 12-pole and radial ion focusing can be achieved by applying a quadrupole field to the device in addition to a dipole field.