Radiant energy – Ionic separation or analysis – Methods
Reexamination Certificate
2006-02-23
2008-09-30
Wells, Nikita (Department: 2881)
Radiant energy
Ionic separation or analysis
Methods
C250S281000, C250S287000
Reexamination Certificate
active
07429728
ABSTRACT:
A distance of flight (DOF) approach to mass spectroscopy in which the resolution among the various ion masses is accomplished in space rather than time. A separate detector is associated with each ion mass resolution element. The DOF mass spectrometer can serve as one element in a tandem arrangement which has the capability to produce a full two-dimensional precursor/product spectrum for each bunch of ions extracted from the source. A “distance-of-flight” (DOF) mass analyzer is used in combination with time-of-flight (TOF) mass analysis for precursor and product dispersion. All the precursor ions can undergo a mass changing reaction simultaneously, while still retaining the essential information about the particular precursor m/z value from which each product ion m/z value emanated. Through the use of a two-dimensional detector, all the products ions from all the precursors can be detected for each batch of ions analyzed.
REFERENCES:
patent: 2642535 (1953-06-01), Schroeder
patent: 5872356 (1999-02-01), Fischer
patent: 4308299 (1994-09-01), None
patent: WO8304187 (1983-12-01), None
patent: WO9939368 (1999-05-01), None
Gonzales Ellen M
Gonzales Patent Services
Smith II Johnnie L
STC.UNM
Wells Nikita
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