Radiant energy – Ionic separation or analysis
Reexamination Certificate
2006-02-14
2006-02-14
Font, Frank G. (Department: 2883)
Radiant energy
Ionic separation or analysis
C250S282000, C250S287000, C250S288000, C250S292000, C250S42300F, C250S42300F, C250S424000, C250S425000
Reexamination Certificate
active
06998605
ABSTRACT:
The present invention relates to an apparatus for delivering ions to a vacuum chamber. The apparatus comprises an ionization chamber, an ionization region within the ionization chamber, a vacuum interface at a vacuum interface voltage and a vacuum chamber, wherein the ionization chamber communicates with the vacuum chamber through the vacuum interface. Sample is introduced into the ionization chamber from an electrospray assembly at approximately ground potential. Two electrodes are provided within the chamber such that three electric fields are generated, a first field extending from the electrospray assembly to the first electrode, a second field extending from the second electrode to the first electrode, and a third field extending from the second electrode to the vacuum interface. Ions are forced to travel through the fields in order before entering the vacuum chamber. In addition, the invention provides a method of delivering ions to a vacuum chamber.
REFERENCES:
patent: 5070240 (1991-12-01), Lee et al.
patent: 5420424 (1995-05-01), Carnahan et al.
patent: 5481108 (1996-01-01), Yano et al.
patent: 5614711 (1997-03-01), Li et al.
patent: 5753910 (1998-05-01), Gourley et al.
patent: 5838003 (1998-11-01), Bertsch et al.
patent: 6040575 (2000-03-01), Whitehouse et al.
patent: 6060705 (2000-05-01), Whitehouse et al.
patent: 6147345 (2000-11-01), Willoughby
patent: 6157030 (2000-12-01), Sakairi et al.
patent: 6204500 (2001-03-01), Whitehouse et al.
patent: 6278110 (2001-08-01), Apffel et al.
patent: 6294779 (2001-09-01), Apffel et al.
patent: 6333632 (2001-12-01), Yang et al.
patent: 6410914 (2002-06-01), Park et al.
patent: 6455845 (2002-09-01), Li et al.
patent: 6534764 (2003-03-01), Verentchikov et al.
Crawford Robert K.
Fischer Steven M.
Frazer William D.
Agilent Technologie,s Inc.
El-Shammaa Mary
Font Frank G.
LandOfFree
Apparatus for delivering ions from a grounded electrospray... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for delivering ions from a grounded electrospray..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for delivering ions from a grounded electrospray... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3638051