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. 17, 2019
Filed:
Jan. 10, 2019
Thermo Fisher Scientific (Bremen) Gmbh, Bremen, DE;
Thermo Finnigan Llc, San Jose, CA (US);
Dmitry E. Grinfeld, Bremen, DE;
Mikhail V. Ugarov, San Jose, CA (US);
Viatcheslav V. Kovtoun, Santa Clara, CA (US);
Alexander A. Makarov, Bremen, DE;
Thermo Fisher Scientific (Bremen) GmbH, Bremen, DE;
Thermo Finnigan LLC, San Jose, CA (US);
Abstract
An apparatus for separating ions includes an electrode arrangement having a length extending between first and second ends. The first end is configured to introduce a beam of ions into an ion transmission space of the arrangement. An electronic controller applies an RF potential and a DC potential to an electrode of the electrode arrangement, for generating a ponderomotive RF electric field and a mass-independent DC electric field. The application of the potentials is controlled such that a ratio of the strength of the ponderomotive RF electric field to the strength of the mass-independent DC electric field varies along the length of the electrode arrangement. The generated electric field supports extraction of ions having different m/z values at respective different positions along the length of the electrode arrangement. Ions are extracted in one of increasing and decreasing sequential order of m/z ratio with increasing distance from the first end.