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. 08, 2009
Filed:
Dec. 14, 2006
Applicant:
Ralf Hartmer, Hamburg, DE;
Inventor:
Ralf Hartmer, Hamburg, DE;
Assignee:
Bruker Daltonik GmbH, Bremen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 49/00 (2006.01); H01J 49/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an RF ion trap mass spectrometer, selected parent ions are fragmented by collisions or electrons and a spectrum of the ion fragments is measured. The measured fragment ion spectrum is then analyzed for the presence of a dominant ion species and, when a dominant ion species is present, selected parent ions are fragmented and a spectrum of the ion fragments is again measured, but with an additional collision excitation of the dominant ion species. The resulting daughter ion spectrum is qualitatively improved.