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:
Aug. 03, 2004
Filed:
Jun. 28, 2001
Roger Guevremont, Gloucester, CA;
Randy Purves, Gloucester, CA;
National Research Council Canada, Ottawa, CA;
Abstract
This invention provides an apparatus and method for desolvating and selectively transmitting and focussing ions, including ions produced by electrospray ionization (ESI), based on the ion focussing principles of high field asymmetric waveform ion mobility spectrometry (FAIMS), for introduction into a mass spectrometer. The ion focussing, trapping and desolvating effects of FAIMS, as identified by the inventors, provides high ion transmission efficiency and high sensitivity for the detection of ions. An apparatus comprising an ESI source, a FAIMS device and a mass spectrometer provides a way of desolvating and selectively transmitting highly solvated ions for introduction into a mass spectrometer for analysis.