Measuring and testing – Gas analysis – Gas chromatography
Reexamination Certificate
2005-06-21
2005-06-21
Larkin, Daniel S. (Department: 2856)
Measuring and testing
Gas analysis
Gas chromatography
C073S023420, C095S087000, C096S106000, C422S089000
Reexamination Certificate
active
06907768
ABSTRACT:
A coupling device connecting the output of a microchromatograph (μCG) to the input of a mass spectrometer (MS), said coupling device comprising a capillary tube with one end connected in sealed fashion to the source under vacuum of the mass spectrometer through the intermediary of an interface device, and with the other end connected to the output of the microchromatograph, in slack fashion, open to the atmosphere; the length and the diameter of the capillary tube being chosen such that the flow rate inside the capillary tube is very close to the flow rate at the output from the microchromatograph; the interface device being, furthermore, provided with heating means for very precise adjustment of the flow rate registered by the capillary.
REFERENCES:
patent: 4662914 (1987-05-01), Hansen et al.
patent: WO 97/23779 (1997-07-01), None
XP-000993588 Henneberg, et al., “High-Performance Gas Chromatograph-Mass Spectrometer Interfacing: Investigation and Optimization of Flow and Temperature”, Journal of Chromatography, 167, pp. 139-147 (1978).
XP-000993587 Henneberg, et al., “Special Techniques in the Combination of Gas Chromatography and Mass Spectrometry”, Journal of Chromatography, 112, pp. 343-352 (1975).
Message, “Practical Aspects of gas chromatography/mass spectrometry”, John Wiley & Sons ed., (1984) (abstract only).
Cozic Ronan
Gass Jean-Louis
Ponchin Georges
Centre National de la Recherche Scientifique
Commissariat a l''Energie Atomique
Hutchison & Mason PLLC
Larkin Daniel S.
LandOfFree
Device for coupling a microchromatograph with a mass... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for coupling a microchromatograph with a mass..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for coupling a microchromatograph with a mass... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3463369