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:
Sep. 04, 2012
Filed:
Dec. 14, 2009
Edward William Sheehan, Pittsburgh, PA (US);
Edward William Sheehan, Pittsburgh, PA (US);
Other;
Abstract
An improved ion optical lens designed to increase the amount of ion current delivered into a multi-pole ion detector or transfer device, such as quadrupole mass analyzer, an ion guide, collision cell, etc. A device and method is disclosed that utilizes a tubular entrance lens to introduce ions into or sample ions at a field-free or near field-free region disposed at the junction of two sets of multi-pole assemblies operating with radio frequency potentials shifted 180 degrees out of phase with respect to each other. The method is useful for increasing the transport of ions into as they enter into or exit out of a multi-pole mass analyzer, such as a quadrupole mass analyzer, an ion guide, collision cell, etc.