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:
Feb. 10, 2004
Filed:
May. 23, 2002
Gary A. Valaskovic, Cambridge, MA (US);
New Objective, Inc., Woburn, MA (US);
Abstract
A method for the coupling of a plurality of sample streams eluting from a plurality of High Pressure Liquid Chromatography columns into a single inlet mass spectrometer, wherein samples from individual chromatography columns are suppled to individual electrospray nozzles in an array of a plurality of electrospray nozzles positioned in front of said single inlet, each nozzle being switchable to an on or off state, and each nozzle being supplied by a sample supply tube or channel and having, in addition to said sample supply tube or channel, a separate fluid removal tube or channel, and wherein each nozzle, when in the off state, is held at a voltage that is between the voltage of the mass spectrometer inlet and the electrospray threshold value for that nozzle.