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:
Dec. 27, 2011
Filed:
Jan. 23, 2006
Jacques Thebault, Bordeaux, FR;
Sébastien Bertrand, Moulis en Medoc, FR;
Christian Robin-brosse, Le Haillan, FR;
Bruno Bernard, Pessac, FR;
Jean-luc Domblides, Bruges, FR;
Jacques Thebault, Bordeaux, FR;
Sébastien Bertrand, Moulis en Medoc, FR;
Christian Robin-Brosse, Le Haillan, FR;
Bruno Bernard, Pessac, FR;
Jean-Luc Domblides, Bruges, FR;
Snecma Propulsion Solide, Le Haillan, FR;
Abstract
A method of densifying a porous substrate with pyrolytic carbon includes loading the substrate into an oven, admitting a reaction gas mixture to the oven, extracting an effluent gas from the oven, and recycling components of the effluent gas into the reaction gas mixture. The reaction gas mixture contains a pyrolytic carbon precursor gas together with a vector gas. The effluent gas contains residual components of the reaction gas mixture together with reaction products, including hydrogen. The recycling is performed after eliminating heavy hydrocarbons contained in the effluent gas.