A chemical vapor infiltration method for densifying porous substrates with pyrolytic carbon
CA 2595498 C · Owner: Snecma Propulsion Solide · Inventors: Thebault, Jacques; Bertrand, Sebastien; Bernard, Bruno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
One or more porous substrates for densification (10) are loaded into an oven (12) into which there is admitted a reaction gas containing a pyrolytic carbon precursor gas comprising at least one gaseous hydrocarbons C x H y in which x and y are integers and x is such that 1 < x < 6 together with a vector gas comprising at least one gas selected from methane and inert gases. Effluent gas containing residual components of the admitted gas together with reaction products, including hydrogen is , extracted from the oven and at least a fraction of a gas stream extracted from the effluent gas and containing pyrolytic carbon precursor reagent gas is recycled (circuit 80) into the reaction …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 23, 2006 and granted March 18, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 23, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.