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. 23, 2010
Filed:
Jan. 21, 2009
David E. Clemmer, Bloomington, IN (US);
Ruwan T. Kurulugama, Richland, WA (US);
Fabiane M. Nachtigall, Bloomington, IN (US);
Zachary Henson, Bloomington, IN (US);
Samuel I. Merenbloom, Bloomington, IN (US);
Stephen J. Valentine, Bloomington, IN (US);
David E. Clemmer, Bloomington, IN (US);
Ruwan T. Kurulugama, Richland, WA (US);
Fabiane M. Nachtigall, Bloomington, IN (US);
Zachary Henson, Bloomington, IN (US);
Samuel I. Merenbloom, Bloomington, IN (US);
Stephen J. Valentine, Bloomington, IN (US);
Indiana University Research and Technology Corporation, Indianapolis, IN (US);
Abstract
An ion mobility spectrometer instrument has a drift tube that is partitioned into a plurality of cascaded drift tube segments. A number of electric field activation sources may each be coupled to one or more of the plurality of drift tube segments. A control circuit is configured to control operation of the number of electric field activation sources in a manner that applies switched electric fields at a specified switching rate to the drift tube segments to thereby produce at the ion outlet only ions having a predefined ion mobility or range of ion mobilities.