Selective chemical removal of hard surface coatings from superalloy substrates
CA 1185152 A · Owner: Enthone, Incorporated · Inventors: Bleeks, Thomas W.; Burns, Debra A.; Brindisi, Frank, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention consists of a chemical stripping composition comprising an aqueous solution of H2SO4 a nitro-substituted, aromatic compound a fluoride ion producing species, and a surfactant, together with an accompanying method wherein the composition can selectively remove hard surface layers deposited through flame plasma spray, and detonation gun techniques on superalloy substrates by contacting the above stripping solution in a heated bath wherein the bath is continuously agitated by an ultrasonic agitation means. BACKGROUND OF THE INVENTION This invention is related to the removal of ceramic cermet, and metallic coatings from high strength high temperature re-, sistant metal substrates …
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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
- Granted April 9, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 9, 2002.
- 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.