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:
Jul. 01, 2014
Filed:
Apr. 26, 2011
Melvin Andrew Park, Billerica, MA (US);
Desmond Allen Kaplan, Billerica, MA (US);
Mark Ridgeway, Bremen, DE;
Melvin Andrew Park, Billerica, MA (US);
Desmond Allen Kaplan, Billerica, MA (US);
Mark Ridgeway, Bremen, DE;
Bruker Daltonics, Inc., Billerica, MA (US);
Bruker Daltonik, GmbH, Bremen, DE;
Abstract
In an ion mobility spectrometer in which a gas flows through a gas-tight tube with a radially quadrupolar RF field therein and blows ions against a DC electric field barrier, a mobility scan with a mobility scale that is linear in time is obtained by holding the height of the DC electric field barrier constant while changing the pressure and temperature conditions of the flowing gas. Alternatively, the mobility scan is performed by holding the pressure and temperature conditions of the flowing gas constant and reducing the height of the DC electric field barrier non-linearly with respect to time.