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. 22, 2016
Filed:
Mar. 17, 2014
Thermo Finnigan Llc, San Jose, CA (US);
Philip M. Remes, Berkeley, CA (US);
Michael W. Senko, Sunnyvale, CA (US);
Michael W. Belford, Los Altos, CA (US);
Jae C. Schwartz, Gilroy, CA (US);
Jean-Jacques Dunyach, San Jose, CA (US);
Berg Tehlirian, Daly City, CA (US);
Thermo Finnigan LLC, San Jose, CA (US);
Abstract
A method is described for identifying the occurrence and location of charging of ion optic devices arranged along the ion path of a mass spectrometer. The method includes repeatedly performing a sequence of introducing a beam of discharge ions to a location on the ion path, and subsequently measuring the intensities of opposite-polarity sample ions delivered to a mass analyzer, with the discharge ions being delivered to a location further downstream in the ion path at each successive sequence.