Measuring and testing – Gas analysis – Gas chromatography
Reexamination Certificate
2006-10-17
2009-02-17
Williams, Hezron (Department: 2856)
Measuring and testing
Gas analysis
Gas chromatography
C073S023350, C073S023360, C073S863120
Reexamination Certificate
active
07490506
ABSTRACT:
The invention provides a MDGC apparatus that includes a cryotrapping apparatus capable of cooling at least twice a portion of a chemical sample and provided with a detector device disposed upstream of the cryotrap and allowing identification of the portion of the chemical sample to control the residence time of the latter in the cryotrapping apparatus.
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Begnaud Frédéric
Chaintreau Alain
Firmenich SA
Shabman Mark
Williams Hezron
Winston & Strawn LLP
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