Process for the production of a carbon/carbon composite material part using mesophase powder
CA 2089985 A1 · Owner: Chenier, Jean P. · Inventors: Hocquellet, Dominique; Chenier, Jean P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for the production of a carbon/carbon composite material using mesophase powder. The process according to the invention comprises the stages of dispersing infusible mesophase microspheres in a solution containing a binder and a solvent able to wet the carbon fibres and thus -form an impregnation bath (20), the binder and the solvent not being carbon precursors impregnating each fibre (1) by the bath placing (24) the impregnated, fibres in a mould and unidirectionally pressing or compressing (26) the impregnated fibres in the mould whilst heating them to a first temperature T1 above ambient temperature suitable for evaporating the solvent and the binder and making the mesophase …
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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 February 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2015.
- 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.