Appeal 2007-2158
Application 10/726,357
supplying a component of a gas turbine engine having an outer
ceramic surface;
providing a reflective-coating mixture, wherein the reflective-coating
mixture comprises a metallic pigment and an evaporable carrier;
applying the mixture to the outer ceramic surface by a method
selected from the group consisting of air-assisted spraying, airless spraying,
brushing, and decal transfer; and
firing the component having the reflective-coating mixture thereon to
form a reflective coating on the ceramic component.
The Examiner relies upon by the following references as evidence of
obviousness:
Houshiyun JP 60081892 A May 9, 1985
Klabunde US 4,877,647 Oct. 31, 1989
Demaray US 4,676,994 Jun. 30, 1994
Vakil US 5,407,705 Apr. 18, 1995
Nagaraj US 5,545,437 Aug. 13, 1996
Tecle US 5,922,403 Jul. 13, 1999
Skoog US 6,210,791 B1 Apr. 3, 2001
Rigney US 6,455,167 B1 Sep. 24, 2002
Skoog US 6,720,034 B2 Apr. 13, 2004
Eppler, Richard A., "Ceramic Coatings" Engineered Materials Handbook, 4,
ASM International, 953-956, 1991.
Kirk-Othmer, Encyclopedia of Chemical Technology, 22, 4th Ed., John
Wiley & Sons, 670-690.
Appellants' claimed invention is directed to a method of applying a
heat-rejection coating on an outer ceramic surface of a component of a gas
turbine engine. The reflective-coating comprises a mixture of a metallic
pigment and evaporable carrier, and is applied to the ceramic surface by one
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