Appeal 2007-2837
Application 10/924,498
computer data file representing a mold having a mold cavity formed for the
three-dimensional part and a gating system, printing the mold in a plurality
of layers with a mold forming material, supplying the molten metal to the
cavity through the gating system, cooling the molten metal, and removing
the mold from the casting (Br. 3).1 Independent claim 1 is illustrative of the
invention and a copy of claim 1 is reproduced below:
1. A process for mold casting of a three-dimensional part comprising
the steps of:
providing a computer data file representing a mold having a mold
cavity formed therein for the three-dimensional part and a gating system for
directing a molten metal to the cavity (18);
printing the mold in a plurality of layers with a mold forming material
(22);
supplying the molten metal to the cavity of the mold through the
gating system (28);
cooling the molten metal to form a casting of the three-dimensional
part; and
removing the mold from the casting (32).
The Examiner has relied on the following prior art reference as
evidence of unpatentability:
Liu US 2004/0140078 A1 Jul. 22, 2004
1 We refer to and cite from the “Amended Brief On Appeal” dated Nov. 14,
2006.
2
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