Method for applying improved durability thermal barrier coatings
CA 2290236 A1 · Owner: Burns, Steven M. · Inventors: Burns, Steven M.; Meehan, Robert J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermal barrier coating may be applied by depositing a MCrAlY bond coat onto a superalloy substrate, wherein M stands for Ni Co, Fe, or a , mixture of, Ni and Co. Undesired oxides and contaminants are removed from the MCrAlY bond coat with an ionized gas stream cleaning process such as a reverse, transfer arc process. An adherent aluminum oxide scale is formed on the MCrAlY bond coat and a ceramic layer is deposited on the aluminum oxide scale by physical vapor deposition to form a columnar structure.
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 November 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2021.
- 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.