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:
Jun. 12, 2012
Filed:
Apr. 22, 2009
Andreas Brekenfeld, Bremen, DE;
Ralf Hartmer, Hamburg, DE;
Andreas Brekenfeld, Bremen, DE;
Ralf Hartmer, Hamburg, DE;
Bruker Daltonik GmbH, Bremen, DE;
Abstract
Analyte ions, particularly biopolymer ions, stored in an RF ion trap are ergodically fragmented by bombarding the analyte ions with collision ions, for example medium-mass, mono-atomic ions having a charge of opposite polarity to the charge of the analyte ions. Since the analyte ions are not fragmented by accelerating and/or exciting them to oscillations, as is the case with conventional collision-induced dissociation, the RF voltage of the ion trap can be set low enough that daughter ions with light charge-related masses that are produced by the fragmentation can also remain trapped in the ion trap.