Method for producing a ceramic matrix composite material having improved toughness
CA 2010343 C · Owner: Societe Nationale D'Etude Et De Construction De Moteurs D'Aviation "Snec Ma" · Inventors: Naslain, Roger; Quenisset, J-Michel; Heraud, Louis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A porous structure made of refractory fibers or densified by carrying out a sequential deposition of a matrix the deposition, comprising at least two chemical vapor infiltration phases of an essentially ceramic material separated by a chemical vapor infiltration of a less rigid material chosen among pyrolytic carbon and boron nitride.
Read the whole patent
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, 1990 and granted January 14, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2012.
- 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.