Etching a substrate: processes – Nongaseous phase etching of substrate – Etching inorganic substrate
Reexamination Certificate
2005-01-18
2005-01-18
Kunemund, Robert (Department: 1765)
Etching a substrate: processes
Nongaseous phase etching of substrate
Etching inorganic substrate
C216S100000, C216S103000, C216S109000, C252S079200
Reexamination Certificate
active
06843928
ABSTRACT:
A method for removing metal cladding adhered to an airfoil, such as a turbine blade, wherein the airfoil comprises a substrate and wherein at least a portion of the cladding is adhered to at least one surface of the substrate of the airfoil. In this method the cladding is treated with a chemical etchant of the metal that the cladding is made of for a period of time sufficient to remove at least the portion of the cladding adhered to the at least one surface of the substrate. The substrate is made of a material that is chemically resistant to the etchant.
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Cline Larry Dean
Pauley Gerald Alexander
Ahmed Shamim
General Electric Company
Guttag Eric W.
Hasse Guttag & Nesbitt LLC
Kunemund Robert
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