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:
Feb. 01, 2005
Filed:
Oct. 04, 2002
Yvan Baudry, Merignac, FR;
Jean-pierre Lambert, Bordeaux, FR;
Bernard Delperier, Martignas sur Jalles, FR;
Jean-françois Potin, Fontenailles, FR;
Yvan Baudry, Merignac, FR;
Jean-Pierre Lambert, Bordeaux, FR;
Bernard Delperier, Martignas sur Jalles, FR;
Jean-François Potin, Fontenailles, FR;
Snecma Propulsion Solide, Le Haillan Cedex, FR;
Abstract
Prior to passing through pumping apparatus effluent gas containing hydrocarbons is subjected to washing by being sprayed with aromatic type oil in oil-recirculating washing apparatus. Polycyclic aromatic hydrocarbons contained in the effluent gas are trapped by being absorbed in the oil. The method is suitable for treating effluent gas coming from an installation for chemical vapor deposition or infiltration using a reagent gas containing a precursor for pyrolytic carbon, or else coming from a cementation installation.