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:
Jan. 22, 2002
Filed:
Jun. 25, 1999
Applicant:
Inventors:
Michel Pasquereau, Sartrouville, FR;
Jean-François Papagni, Saint Rémy les Chevreuses, FR;
Richard Levesque, Suresnes, FR;
Laurent Dayde, Suresnes, FR;
Assignee:
Institut Francais du Petrole, Rueil-Malmaison Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 1/22 ;
U.S. Cl.
CPC ...
G01N 1/22 ;
Abstract
A process for sampling aldehydes and ketones contained in diluted exhaust gases from thermal combustion engines uses a sampling unit that has a specific trapping circuit and a simulation circuit that simulates the specific trapping circuit. The specific trapping circuit and the simulation circuit are arranged in parallel. The diluted gases are passed for some time in the simulation circuit ( ) before they are passed into specific trapping circuit wherein aldehydes and ketones are trapped.