Radiant energy – Ionic separation or analysis – With sample supply means
Reexamination Certificate
2005-11-28
2008-08-12
Berman, Jack I. (Department: 2881)
Radiant energy
Ionic separation or analysis
With sample supply means
C250S281000, C250S282000, C250S287000, C250S290000, C250S291000, C250S42300F, C250S425000, C703S002000, C703S012000
Reexamination Certificate
active
07411185
ABSTRACT:
An atmospheric pressure ionization mass spectrometry system has an atmospheric pressure ionization chamber for ionizing a sample, an evacuated intermediate evacuation chamber into which generated ions are introduced through a capillary tube, and a vacuum chamber further downstream therefrom into which ions are introduced for mass separation. A partition wall separating the atmospheric pressure ionization chamber from the intermediate evacuation chamber includes a small orifice having a diameter corresponding to an internal channel diameter of the capillary tube. The capillary tube is detachably installed on the partition wall so that an outlet end of the capillary tube abuts on the small orifice. The internal channel of the capillary tube is in communication with the small orifice. The capillary tube can be installed and removed from the system without breaching the vacuum.
REFERENCES:
patent: 6501073 (2002-12-01), Mylchreest et al.
patent: 7145136 (2006-12-01), Yang et al.
patent: 2006/0054805 (2006-03-01), Flanagan et al.
Berman Jack I.
Kanesaka Manabu
Sahu Meenakshi S
Shimadzu Corporation
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