The sole count of this interference is
Count I
The method of treating molten aluminum according to claims 1, 17,
35, 44 or 45 of Megy Patent 5,935,295;
or
the method of treating molten aluminum according to claim 21 of the
Heshmatpour Application 09/020,616.
Paper 1, p. 32. Megy's claims 17, 35, 44 and 45, the other alternatives of the count, are reproduced
in the margin .2
2 17. An improved method for treating molten aluminum for solidifying into cast
products wherein the molten aluminum is subject to a molten metal treatment for
removing impurities, the method comprising:
(a) providing a molten aluminum body in a temperature range of 12000 to
1500* F.;
(b) providing titanium in the range of I to 1500 ppm in said molten aluminum
body;
(c) after providing said titanium in said body, introducing to said body a material
reactive with said titanium, said material being in gaseous form at molten
aluminum temperatures and being introduced to said body in a carrier gas
or fluxing gas, said material selected from at least one of a chloride or
fluoride of one of the groups consisting of boron, sulfur, nitrogen and
phosphorus, said material and said titanium forming a grain refining
nuclei in said molten aluminum body; and
(d) solidifying at least a portion of said molten aluminum body into a grain refined,
cast product.
35. An improved method of fluxing, grain refiriing and casting aluminum, the method
comprising the steps of.
(a) providing a body of molten aluminum;
(b) providing titanium in said body of molten aluminum in a range of I to 3000
ppm;
(c) subjecting said body to a fluxing treatment with a gas to remove both dissolved
and suspended materials;
(d) contacting said molten aluminum body with a gaseous compound reactive with
said titanium, said gaseous compound having at least one component
selected from the group consisting of boron, sulfur, nitrogen and
phosphorus;
(e) forming a grain refining material in said molten aluminum comprised of said
gaseous compound and said titanium; and
(f) casting said molten aluminum into a grain refined, solid form.
44, A method of grain refining aluminum, the method comprising:
(a) providing a molten aluminum body;
(b) providing 1 to 1500 ppm titanium in said molten aluminum body;
(c) introducing to said molten aluminum body a material reactive with said
(continued...
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