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:
Aug. 25, 2015
Filed:
Oct. 04, 2013
Thermo Finnigan Llc, San Jose, CA (US);
Jae C. Schwartz, Gilroy, CA (US);
Thermo Finnigan LLC, San Jose, CA (US);
Abstract
An apparatus for a mass spectrometer comprises: a set of four rod electrodes defining an ion occupation volume therebetween having entrance and exit ends, at least one of the rod electrodes having a slot passing therethrough; first and second ion optics disposed adjacent to the entrance and exit ends, respectively; a voltage supply system; and at least one supplemental electrode disposed at least partially within the at least one slot, wherein the voltage supply system is configured so as to supply a radio-frequency (RF) voltage, a direct-current (DC) filtering voltage and an oscillatory dipole resonant ejection voltage across members of the set of rod electrodes and so at to supply a secondary ion-trapping RF voltage and a secondary DC filtering voltage to the at least one supplemental electrode and to supply DC voltages across the rod electrodes and each of the first and second ion optics.