Appeal 2007-2658
Application 10/451,143
STATEMENT OF THE CASE
The subject matter on appeal is directed to a copper (Cu)-base
amorphous alloy which is said to have “a high glass-forming ability”
(Specification 1, ll. 5-6). Further details of the appealed subject matter are
recited in representative claim 2 reproduced below:
2. A Cu-base amorphous alloy product comprising:
an amorphous phase of 90% or more by volume fraction,
wherein said amorphous alloy product has a composition
represented by the following formula:
Cu100-a-b(Zr+Hf)aTib, wherein a and b are atomic percentages falling
within the following ranges: 10<a ≤40,5≤ b≤30, 35≤a+b≤50,
wherein a supercooled liquid region of said amorphous phase
has a temperature interval ΔTx of 25K or more, said temperature
interval being presented by the following formula: ΔTx=Tx-Tg, Tx
being a crystallization temperature of said alloy, and Tg being a glass
transition temperature of said alloy, and
wherein a diameter or thickness of said Cu base amorphous
alloy product is 1 mm or more.
As evidence of unpatentability of the claimed subject matter, the
Examiner has relied upon the following references1:
Okamoto JP 59-126739 (Kokai) Jul. 21, 1984
Peker US 5,368,659 Nov. 29, 1994
Yuichi JP 10-175082 (Kokai) Jun. 30, 1998
1 Our reference to the Japanese Patent publications relied upon by the
Examiner is to the corresponding English translations of record.
2
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