Process to manufacture carbon/carbon or carbon/ceramic honeycomb sandwich panels and structures made from such panels
CA 2200349 A1 · Owner: Aerospatiale Societe Nationale Industrielle · Inventors: Pasquet, Jean Christophe; Rousseau Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a process for manufacturing a honeycomb sandwich panel in which the honeycomb core is covered on either side with a carbon/carbon or carbon/ceramic skin. The process consists of making a core by pyrolysing a honeycomb (1) structure made of carbon fabric which has been pre-impregnated with thermosetting resin assembling the core (1) and the skin(s) (2 3) by setting between the core and the skin a carbon fabric pre-impregnated with thermosetting resin polymerizing through compaction and pyrolyzing the entire assembly and conducting a chemical vapour infiltration in order to densify and reinforce the glueing of the assembly. Applied to the manufacture of structures with …
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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 March 18, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 18, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 18, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.