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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
6462338 Mass spectrometer Oct. 8, 2002
6452168 Apparatus and methods for continuous beam fourier transform mass spectrometry Sep. 17, 2002
6452167 Miniature quadrupole mass spectrometer having a cold cathode ionization source Sep. 17, 2002
6441369 Tandem time-of-flight mass spectrometer with improved mass resolution Aug. 27, 2002
6441370 Linear multipole rod assembly for mass spectrometers Aug. 27, 2002
6434031 Driving a quadrupole mass spectrometer via an isolating stage Aug. 13, 2002
6433494 Inductional undulative EH-accelerator Aug. 13, 2002
6423965 Mass spectrometer Jul. 23, 2002
6417511 Ring pole ion guide apparatus, systems and method Jul. 9, 2002
6410913 Fragmentation in quadrupole ion trap mass spectrometers Jun. 25, 2002
6403952 Ion transfer from multipole ion guides into multipole ion guides and ion traps Jun. 11, 2002
6403955 Linear quadrupole mass spectrometer Jun. 11, 2002
6396058 Single particle caloric absorption spectrometer May. 28, 2002
6392226 Mass spectrometer May. 21, 2002
6392225 Method and apparatus for transferring ions from an atmospheric pressure ion source into an ion trap mass spectrometer May. 21, 2002
6380666 Time-of-flight mass spectrometer Apr. 30, 2002
6344646 Ion trap mass spectrometer and ion trap mass spectrometry Feb. 5, 2002
6340814 Mass spectrometer with multiple capacitively coupled mass analysis stages Jan. 22, 2002
6329654 Multipole rod construction for ion guides and mass spectrometers Dec. 11, 2001
6326615 Rapid response mass spectrometer system Dec. 4, 2001
6323455 Separation of isotopes by ionisation for processing of nuclear fuel materials Nov. 27, 2001
6316769 Mass spectrometer Nov. 13, 2001
6297500 Quadrupole RF ion traps for mass spectrometers Oct. 2, 2001
6281494 Miniature micromachined quadrupole mass spectrometer array and method of making the same Aug. 28, 2001
6262416 Miniature micromachined quadrupole mass spectrometer array and method of making the same Jul. 17, 2001
6239429 Quadrupole mass spectrometer assembly May. 29, 2001
6222185 Plasma mass spectrometer Apr. 24, 2001
6194716 Method for mass calibration Feb. 27, 2001
6194717 Quadrupole mass analyzer and method of operation in RF only mode to reduce background signal Feb. 27, 2001
6191417 Mass spectrometer including multiple mass analysis stages and method of operation, to give improved resolution Feb. 20, 2001
6188067 Miniature micromachined quadrupole mass spectrometer array and method of making the same Feb. 13, 2001
6180941 Mass spectrometer Jan. 30, 2001
6163032 Tapered or tilted electrodes to allow the superposition of independently controllable DC field gradients to RF fields Dec. 19, 2000
6157030 Ion trap mass spectrometer Dec. 5, 2000
6157029 Miniature micromachined quadrupole mass spectrometer array and method of making the same Dec. 5, 2000
6157031 Quadropole mass analyzer with linear ion trap Dec. 5, 2000
6153880 Method and apparatus for performance improvement of mass spectrometers using dynamic ion optics Nov. 28, 2000
6147348 Method for performing a scan function on quadrupole ion trap mass spectrometers Nov. 14, 2000
6140641 Ion-trap mass analyzing apparatus and ion trap mass analyzing method Oct. 31, 2000
6140638 Bandpass reactive collision cell Oct. 31, 2000
6133568 Ion trap mass spectrometer of high mass-constancy Oct. 17, 2000
RE36906 Quadrupole ion trap with switchable multipole fractions Oct. 10, 2000
6130426 Kinetic energy focusing for pulsed ion desorption mass spectrometry Oct. 10, 2000
6124591 Method of ion fragmentation in a quadrupole ion trap Sep. 26, 2000
6121610 Ion trap mass spectrometer Sep. 19, 2000
6114691 RF-only mass spectrometer with auxiliary excitation Sep. 5, 2000
6111250 Quadrupole with axial DC field Aug. 29, 2000
6107627 Apparatus for analysis of mixed gas components Aug. 22, 2000
6107628 Method and apparatus for directing ions and other charged particles generated at near atmospheric pressures into a region under vacuum Aug. 22, 2000
6102763 Process for producing a quadrupole electrode arrangement Aug. 15, 2000

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