Refurbishing of corroded superalloy or heat resistant steel parts and parts so refurbished
CA 2114413 C · Owner: Diffusion Alloys Ltd. · Inventors: Kempster, Adrian; Czech, Norbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
21, The invention relates to the refurbishing of a corroded superalloy or heat resistant steel part in particular, a gas turbine component like a gas turbine blade having, a surface with products of corrosion. According to the invention, the surface is cleaned, in particular by mechanical or chemical means, and an aluminide coating is applied to the cleaned surface. Subsequently, the aluminide coating is removed, whereby all products of corrosion which have still remained in the part to be refurbished are removed as well.
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 July 17, 1992 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 2014.
- 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.