Appeal No. 95-0808
Application 08/048,866
formula recited in appellants’ claim 1.
Appellants argue that Basil does not disclose reacting
cerium oxide with tetraethylorthosilicate and adding the
reaction product to a partially hydrolyzed alkoxide (brief,
pages 5-6). This argument is not well taken because these
steps are not required by appellants’ claim 1. The claim
merely requires the presence of a partially hydrolyzed
alkoxide of the recited formula which, as stated above, can be
tetraethylorthosilicate, and the reaction product of cerium
oxide and tetraethylorthosilicate. Thus, Basil’s Example III
anticipates appellants’ claim 1 if some of the
tetraethylorthosilicate in that example reacts with at least
some of the cerium oxide.
In Basil’s Example III, the mixture of cerium oxide and
tetraethylorthosilicate is stirred at 60EC for 2 hours. In
the only example in appellants’ specification (page 6), the
mixture of tetraethylorthosilicate and cerium oxide is stirred
for 4 hours at room temperature. Although the stirring time
in Basil’s Example III is less than that in appellants’
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