The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 1992
Filed:
Sep. 24, 1990
Applicant:
Inventors:
Francis Bryselbout, Le Mesnil Saint Denis, FR;
Patrick Mauvais, Villepreux, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; B01D / ;
U.S. Cl.
CPC ...
73 2341 ; 73 2335 ; 73 2342 ; 73 2339 ; 55197 ; 55 67 ; 422 89 ;
Abstract
The apparatus for determining the quantity of impurity in a gas by chromatography in gas phase comprises a device for cryogenically trapping impurities, which is provided with a column filled with granular particles of a product capable of adsorbing the impurities, refrigerating means capable of keeping the column at low temperature during passage of the gas loaded with impurities and reheating means for an ulterior desorption;