Coating processes – Interior of hollow article coating – Coating by vapor – gas – mist – or smoke
Reexamination Certificate
2005-07-05
2005-07-05
Meeks, Timothy (Department: 1762)
Coating processes
Interior of hollow article coating
Coating by vapor, gas, mist, or smoke
C427S253000
Reexamination Certificate
active
06913788
ABSTRACT:
A process for chroming an inner surface of a component, in which the inner surface which is to be coated is not brought into contact with a powder which forms the coating gas, includes: providing a mixture of chromium granules and an activator; heating the mixture to a temperature at which a coating gas which substantially comprises gaseous CrCl is formed; dissipating the coating gas; and exposing the inner surface of the component to the coating gas thereby forming a chromium-containing diffusion layer.
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European Search Report and translation thereof (Nov. 2001).
English Abstract of Shishkov, R. et al. Abstract No. 196855, no date.
Crowell & Moring LLP
Meeks Timothy
MTU Aero Engines GmbH
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