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.

Date of Patent:
Sep. 21, 2004

Filed:

May. 08, 2003
Applicant:
Inventors:

Roger Tong, Berkeley, CA (US);

Gregory Wells, Fairfield, CA (US);

Steven Schachterle, Martinez, CA (US);

Assignee:

Varian, Inc., Palo Alto, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 4/928 ;
U.S. Cl.
CPC ...
H01J 4/928 ;
Abstract

An apparatus for use as an ion source for mass analysis includes a nebulizing device, a vaporizing device, a chamber, an ion sampling structure, and an ionizing device. The vaporizing device includes a vaporizing interior that terminates at a vaporizing device outlet. The chamber fluidly communicates with the vaporizing device outlet. The ion sampling structure has an ion sampling inlet fluidly communicating with the chamber and spaced from the vaporizing device outlet. The ionizing device includes first and second electrodes positioned to produce an electrical discharge therebetween a location closer to the vaporizing device outlet than to the ion sampling inlet.


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