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. 08, 2016
Filed:
Nov. 13, 2014
Applicant:
Bruker Daltonik Gmbh, Bremen, DE;
Inventors:
Melvin Andrew Park, Billerica, MA (US);
Desmond Allen Kaplan, Billerica, MA (US);
Mark Ridgeway, Bremen, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 49/00 (2006.01); H01J 49/06 (2006.01); G01N 27/62 (2006.01);
U.S. Cl.
CPC ...
H01J 49/06 (2013.01); G01N 27/622 (2013.01); G01N 27/624 (2013.01);
Abstract
Ions with a predetermined range of ion mobilities are produced by filtering input ions with at least two consecutive ion mobility high pass and/or low pass filters. Each ion mobility filter is formed by entraining ions in a moving gas and applying a DC electric field to the ions which causes the ions to move in a direction opposite to the gas flow. An ion mobility high pass filter is formed when the DC electric field drives the ions against the flow of gas, whereas an ion mobility low pass filter is formed when a the gas flow drives entrained ions against an DC electric field barrier.