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:
Mar. 20, 2018
Filed:
Dec. 06, 2014
Dh Technologies Development Pte. Ltd., Singapore, SG;
Bradley B. Schneider, Bradford, CA;
Hassan Javaheri, Richmond Hill, CA;
Thomas R. Covey, Richmond Hill, CA;
DH Technologies Development Pte. Ltd., Singapore, SG;
Abstract
Differential mobility spectrometry is performed under vacuum. Ions generated in a high pressure region are received from the inlet orifice of a vacuum chamber using a first ion guide located in the vacuum chamber. The first ion guide focuses the generated ions on a DMS device inlet end using a plurality of tapered electrodes. The DMS device is coaxial and adjacent to the first ion guide. The DMS device separates the focused ions using a plurality of electrodes. The inscribed diameter at the DMS device inlet end is larger than the inscribed diameter at the first ion guide exit end to maximize ion transfer. The separated ions are received from the DMS device using a second ion guide coaxial and adjacent to the DMS device. The second ion guide focuses the separated ions on an exit orifice of the vacuum chamber using a plurality of tapered electrodes.