Process of formation of a ceramic coating on a substrate by electron-beam physical vapor deposition
CA 2425409 C · Owner: Snecma · Inventors: Malie, Andre; Chaput, Christophe; Porte, Isabelle
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite target is placed in a chamber (14). The target is in the form of a bar (20)made of ceramic powder and it presents composition that is not uniform in the longitudinal direction. At least one substrate (10) is introduced into the chamber in order to have formed thereon a ceramic coating with a composition gradient. The top face of the bar is swept by an electron beam so as to melt the bar material at its top face and form a vapor cloud in the chamber under low pressure. A bar (20) is used that presents a plurality of superposed layers of different compositions with the composition within each layer being uniform over the entire cross-section of the bar. Each layer of the bar …
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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 April 17, 2003 and granted March 29, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2025.
- 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
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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.