Appeal 2007-0086
Application 10/845,785
We AFFIRM.
The Appellant claims a process for preparing a foundry shape which
comprises: preparing a foundry mix comprising foundry aggregate, an acid-
curable resin, and a catalytically effective amount of an acid catalyst and
having a work time of 3-10 minutes; shaping the foundry mix into a foundry
shape; and partially or totally removing water from the foundry shape to
thereby improve the speed of cure of the acid-curable resin. According to
Appellant, “[t]he novel aspect of this process is that water is partially or
totally removed from the foundry shape after it is shaped in the pattern”
(Specification 8). This claimed subject matter is adequately illustrated by
independent claim 1 and dependent claim 40 which read as follows:
1. A process for preparing a foundry shape comprising:
A. preparing a foundry mix comprising a major amount of foundry
aggregate, an effective binding amount of an acid-curable resin, and a
catalytically effective amount of an acid catalyst and having a work time of
3-10 minutes;
B. then shaping the foundry mix into a foundry shape; and
C. then partially or totally removing water from the foundry shape
to thereby improve the speed of cure of the acid-curable resin.
40. The process claim 1, 16 or 28 wherein the foundry shape is
substantially cured within 15 minutes.
The references set forth below are relied upon by the Examiner as
evidence of unpatentability:
Brown US 3,184,814 May 25, 1965
Lang US 3,306,864 Feb. 28, 1967
Marsden US 4,782,102 Nov. 1, 1988
Iyer US 4,848,442 Jul. 18, 1989
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