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. 29, 2026
Filed:
Sep. 28, 2022
Thermo Finnigan Llc, San Jose, CA (US);
Abstract
A dual polarity ion detector comprises: an entrance electrode disposed to receive ions and maintained at a reference voltage, V; a first dynode maintained at a voltage, V, that is negative relative to V; a second dynode maintained at a voltage, V, that is positive relative to V; a shielding electrode disposed between the first and second dynodes and maintained at a voltage, V; and an ion detector comprising an entrance aperture configured to receive first secondary particles from the first dynode and second secondary particles from the second dynode, the entrance aperture maintained at a voltage, V; that is intermediate between the voltage, V, and the voltage, V. In some instances, the voltage, V, may be equal to or approximately equal to the voltage, V.