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. 21, 2001
Filed:
Nov. 12, 1998
Edward W. Sheehan, Pittsburgh, PA (US);
Ross C. Willoughby, Pittsburgh, PA (US);
Joseph A. Jarrell, Newton Highlands, MA (US);
David M. Strand, Sherborn, MA (US);
Abstract
An improved electrospray (ES) apparatus has a low pressure ES chamber coupled to a desolvation chamber. The desolvation chamber desolvates the incoming analyte ions of the cone-jet with non-conductive energy. The apparatus stabilizes cone-jet formation in the ES chamber. The apparatus receives solvated ions without pressure reduction, produces desolvated ions with non-conductive energy in a low pressure region, and outputs the desolvated ions towards a mass spectrometer as a substantially solvent-free ion beam suitable for mass spectrometer analysis. The apparatus avoids the degree of pressure reduction featured in prior ES techniques.