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:
Dec. 25, 2018
Filed:
Mar. 21, 2016
Juan Fernandez DE LA Mora, New Haven, CT (US);
Juan Fernandez de la Mora, New Haven, CT (US);
Other;
Abstract
Achieving high conversion of large multiply charged biological ions into low charge states involves requirements difficult to reconcile when high transmission and good spray quality (resulting in narrow mobility distributions) are sought. These multiple goals are achieved in this invention by partially isolating different regions from each other with electrostatic barriers relatively transparent to ions, such as metallic grids. One such region requires high electric fields for ion generation. The other region, used for ion recombination, is approximately field-free. In an alternative arrangement intended for charge reduction in sub-millisecond times, two sources of ions with opposite polarities are placed contiguously, with a grid in between. In all cases, ion crossing through grids into field free regions is effectively driven by space charge.