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. 25, 1995
Filed:
Feb. 22, 1994
Joseph A Jarrell, Newton Highlands, MA (US);
Michael J Tomany, Thompson, CT (US);
Waters Investments Limited, Wilmington, DE (US);
Abstract
A system for forming a time modulated electrospray from a sample solution is provided. Further systems for analyzing this time modulated electrospray also are provided. An element connected to a time modulated voltage source is positioned substantially opposite an electrospray apparatus and an analytical apparatus so that the initial direction of travel of the electrospray is reversed and the electrospray is diverted into the analytical apparatus. A second time modulated voltage can be provided which causes the periodic deflection of an ion beam, resulting from a time modulated electrospray, into a mass analyzer in a vacuum system. The modulation of this second voltage source is coordinated with the time modulation of the first voltage source which causes the formation of an electrospray in such a manner that efficiency of sample introduction into the mass analyzer is improved.