Appeal No. 1996-2734 Page 6
Application No. 08/133,680
claimed subject matter on appeal herein, appellants urge that
the applied references do not suggest the claimed composition.
In this regard, we note that appellants do not dispute that
Schwartzkopf describes an alkaline-containing photoresist
stripper composition that includes a solvent and a
nucleophilic amine that correspond in kind and amount to that
required by
appellants’ claim 15 (See page 4 of the brief and pages 6 and
7 of the answer). Thus, appellants arguments focus on the
reducing agent component of the composition as the basis for
the patentability of the claimed subject matter. We do not
find those arguments convincing for reasons as follows.
We observe that appellants acknowledge that Schwartzkopf
describes the addition of non-nitrogen containing weak acids
to the stripper composition (brief, paragraph bridging pages 5
and 6). We note that the weak acid component is used in the
composition of Schwartzkopf in amounts of about .05 to about
25%, by weight, (column 3, lines 15-22), an amount that
corresponds to appellants’ effective amount of reducing
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