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. 13, 2012
Filed:
Aug. 25, 2009
Gregory J. Wells, Fairfield, CA (US);
Gregory J. Wells, Fairfield, CA (US);
Agilent Technologies, Inc., Santa Clara, CA (US);
Abstract
In a mass spectrometer, a dual stage axial extraction field is applied to transport ions from an accumulator to a detector cell. Ions of a same mass may be transported to the detector cell or a point axially preceding the detector cell at the same time. This may be done by selecting the relative strengths of a first axial electric field applied to the accumulator and a second axial electric field applied to a shutter located at an exit end of the accumulator. This may also be done by selecting relative axial lengths of the accumulator, shutter, and an ion guide located at an exit end of the shutter. A dual stage decelerating field may also be applied to slow ions down prior to and after entering the detector cell.