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Class Information
Number: 250/292
Name: Radiant energy > Ionic separation or analysis > Cyclically varying ion selecting field means > Laterally resonant ion path
Description: Subject matter wherein the selecting means comprises field means causing alternating deflection of the ions normal to their general forward motion.










Patents under this class:
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Patent Number Title Of Patent Date Issued
6093929 High pressure MS/MS system Jul. 25, 2000
6091068 Ion collector assembly Jul. 18, 2000
6087658 Ion trap Jul. 11, 2000
6075244 Mass spectrometer Jun. 13, 2000
6075243 Mass spectrometer Jun. 13, 2000
6069355 Ion trap mass pectrometer with electrospray ionization May. 30, 2000
6060706 Analytical apparatus using ion trap mass spectrometer May. 9, 2000
6049052 Miniature micromachined quadrupole mass spectrometer array and method of making the same Apr. 11, 2000
6040573 Electric field generation for charged particle analyzers Mar. 21, 2000
6028308 Resolving RF mass spectrometer Feb. 22, 2000
6025591 Quadrupole mass spectrometers Feb. 15, 2000
6015972 Boundary activated dissociation in rod-type mass spectrometer Jan. 18, 2000
6011259 Multipole ion guide ion trap mass spectrometry with MS/MS.sup.N analysis Jan. 4, 2000
6011260 Mass spectrometer Jan. 4, 2000
5998787 Method of operating a mass spectrometer including a low level resolving DC input to improve signal to noise ratio Dec. 7, 1999
5994697 Ion trap mass spectrometer and ion trap mass spectrometry Nov. 30, 1999
5986260 Mass analyzer Nov. 16, 1999
5942752 Higher pressure ion source for two dimensional radio-frequency quadrupole electric field for mass spectrometer Aug. 24, 1999
5939718 Inductively coupled plasma mass spectroscopic apparatus Aug. 17, 1999
5903003 Methods of comparative analysis using ion trap mass spectrometers May. 11, 1999
5864136 Mass spectrometry method with two applied trapping fields having the same spatial form Jan. 26, 1999
5859433 Ion trap mass spectrometer with vacuum-external ion generation Jan. 12, 1999
5852294 Multiple rod construction for ion guides and mass spectrometers Dec. 22, 1998
5852302 Cylindrical multiple-pole mass filter with CVD-deposited electrode layers Dec. 22, 1998
5852270 Method of manufacturing a miniature quadrupole using electrode-discharge machining Dec. 22, 1998
5847386 Spectrometer with axial field Dec. 8, 1998
5825026 Introduction of ions from ion sources into mass spectrometers Oct. 20, 1998
5825027 Mass spectrometer Oct. 20, 1998
5818041 Mass spectrometer system and method for transporting and analyzing ions Oct. 6, 1998
5818055 Method and device for injection of ions into an ion trap Oct. 6, 1998
5811800 Temporary storage of ions for mass spectrometric analyses Sep. 22, 1998
5796100 Quadrupole ion trap Aug. 18, 1998
5793038 Method of operating an ion trap mass spectrometer Aug. 11, 1998
5789747 Three dimensional quadrupole mass spectrometry and mass spectrometer Aug. 4, 1998
5783824 Ion trapping mass spectrometry apparatus Jul. 21, 1998
5767513 High temperature octopole ion guide with coaxially heated rods Jun. 16, 1998
5763878 Method and device for orthogonal ion injection into a time-of-flight mass spectrometer Jun. 9, 1998
5756996 Ion source assembly for an ion trap mass spectrometer and method May. 26, 1998
5750993 Method of reducing noise in an ion trap mass spectrometer coupled to an atmospheric pressure ionization source May. 12, 1998
5747800 Three-dimensional quadrupole mass spectrometer May. 5, 1998
5747801 Method and device for improved trapping efficiency of injected ions for quadrupole ion traps May. 5, 1998
5739530 Method and device for the introduction of ions into quadrupole ion traps Apr. 14, 1998
5734163 Zero method of controlling quadrupole mass spectrometer and control circuit arrangement to carry out this method Mar. 31, 1998
5734162 Method and apparatus for selectively trapping ions into a quadrupole trap Mar. 31, 1998
5729014 Method for injection of externally produced ions into a quadrupole ion trap Mar. 17, 1998
5719393 Miniature quadrupole mass spectrometer array Feb. 17, 1998
5714755 Mass scanning method using an ion trap mass spectrometer Feb. 3, 1998
5710427 Method for controlling the ion generation rate for mass selective loading of ions in ion traps Jan. 20, 1998
5708268 Method and device for the transport of ions in vacuum Jan. 13, 1998
RE35701 Quadrupole mass spectrometer Dec. 30, 1997

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