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:
Mar. 29, 2011
Filed:
Oct. 15, 2008
Maurizio A. Splendore, Walnut Creek, CA (US);
Eloy R. Wouters, San Jose, CA (US);
Michael W. Senko, Sunnyvale, CA (US);
Paul R. Atherton, San Jose, CA (US);
Jean Jacques Dunyach, San Jose, CA (US);
Christopher Mullen, Menlo Park, CA (US);
Maurizio A. Splendore, Walnut Creek, CA (US);
Eloy R. Wouters, San Jose, CA (US);
Michael W. Senko, Sunnyvale, CA (US);
Paul R. Atherton, San Jose, CA (US);
Jean Jacques Dunyach, San Jose, CA (US);
Christopher Mullen, Menlo Park, CA (US);
Thermo Finnigan LLC, San Jose, CA (US);
Abstract
A device for improved transportation and focusing of ions in a low vacuum or atmospheric-pressure region of a mass spectrometer is constructed from one or more electro-dynamic or electrostatic focusing lenses that is/are coupled to the first electrode of a stacked ring ion guide (SRIG) to which oscillatory (e.g., radio-frequency) voltages are applied. Such configurations as disclosed herein, minimizes deleterious field effects and/or repositioning problems of desired ion transfer instruments that utilize such stacked ring ion guides by generally configuring the outlet end of the ion transfer device to a desired position within the electro-dynamic or electro-static focusing lens(es).