Appeal No. 2006-2027
Application No. 10/735,370
depositing a primary ceramic coating onto the exposed
surface of the bond coat,
depositing a cerium-precursor compound onto an exposed
surface of the primary ceramic coating, and
heating the cerium-oxide-precursor compound in an oxygen-
containing atmosphere to form cerium oxide adjacent to the
exposed surface of the primary ceramic coating.
The examiner relies upon the following references in the
rejections of the appealed claims:
Taylor et al. (Taylor) 5,520,516 May 28, 1996
Ueda et al. (Ueda) 5,697,992 Dec. 16, 1997
Stoffer et al. (Stoffer) 5,932,083 Aug. 3, 1999
Subramanian US 6,296,945 Oct. 2, 2001
Appellants’ claimed invention is directed to a method of
protecting an article, such as a component of a gas turbine
engine, that is subjected to high temperatures. The method
entails forming a thermal barrier coating on the article by
depositing a primary ceramic coating, depositing a cerium-oxide-
precursor compound onto the primary ceramic coating, and heating
the cerium-oxide-precursor compound in an oxygen atmosphere to
form cerium-oxide where cerium is in the +4 oxidation state.
Appealed claims 13-17 stand rejected under 35 U.S.C.
§ 102(b) as being anticipated by Subramanian in view of Stoffer.1
Claims 13-17 also stand rejected under 35 U.S.C. § 103(a) as
being unpatentable over Subramanian in view of Stoffer. Claims
1 This rejection subsumes the rejection of claims 13-17 under § 102 over Subramanian alone.
2
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