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:
Aug. 26, 2008
Filed:
May. 24, 2006
Stefan Zimmermann, Lübeck, DE;
Wolfgang Bäther, Lübeck, DE;
Stefan Zimmermann, Lübeck, DE;
Wolfgang Bäther, Lübeck, DE;
Dräger Saftey AG & Co. KGaA, Lübeck, DE;
Abstract
An ion mobility spectrometer is provided with at least one ionization chamber () through which analyte-containing gas can flow. A radiation source () is provided from which ionizing radiation is suitable for ionizing the analyte-containing gas at least partially, enters the ionization space (). A separation area is located behind the ionization space () in the direction of flow, into which the partially ionized gas is admitted as an ion carrier gas () and a nearly ion-free gas is admitted as a drift gas () in such a way that a flow in which predominantly ion carrier gas () flows through cross-sectional areas () and predominantly drift gas () flows through other cross-sectional areas ('), becomes established at least in the inlet area of the separation area (). The drift gas () and ion carrier gas () flow unidirectionally and the cross-sectional areas (), through which predominantly ion carrier gas () flows, are smaller in at least one dimension than the cross-sectional areas (′), through which predominantly drift gas () flows.