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:
Sep. 20, 2011
Filed:
May. 27, 2009
Applicant:
Karsten Michelmann, Bremen, DE;
Inventor:
Karsten Michelmann, Bremen, DE;
Assignee:
Bruker Daltonik GmbH, Bremen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 59/44 (2006.01); H01J 49/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an ion mobility spectrometer (IMS) coupled to a mass spectrometer (MS), the ion current from a suitable ion source is modulated with an analog modulation having a smooth modulation function, whose instantaneous frequency varies with time over a wide frequency range. The modulated ion current is continuously fed through a mobility drift region into the mass spectrometer, where the temporally varying ion current profile of at least one ion species is measured. The mobility spectrum of the ion species is then generated by correlating its ion current time profile with the modulation function.