Appeal No. 2002-2274
Application No. 08/387,158
of these claims the amount of zinc can be as low as about 20% and
the amount of indium can be as low as 0.11%. Linder teaches that
the alloy can contain about 20 wt% zinc and about 0.1 wt% indium
(col. 1, lines 23-25). Using 0.11 wt% indium in Linder’s alloy
would have been obvious to one of ordinary skill in the art for
the reason given above regarding the rejection of claim 33.
Dependent claim 61, which depends from claim 60, claims an
alloy comprising about 20% to about 30% Zn, 0.11% to about
0.5% In, about 0.005% to about 0.1% Ti, about 0.001% to about
0.02% B, and the balance Al. Independent claim 67 claims an
alloy consisting essentially of from about 10% to about 50% Zn,
0.11% to about 0.6% In, about 0.005% to about 0.1% Ti, about
0.001 to about 0.02% B, and the balance Al. Adding the amounts
of Ti and B recited in claims 61 and 67 to Linder’s alloy would
have been obvious to one of ordinary skill in the art in view of
JP ‘683, JP ‘637 or JP ‘128 for the reason given above regarding
the rejection of claim 45.
The alloy recited in claim 63, which consists essentially of
about 10% to about 50% Zn, 0.11% to about 0.6% In, about 0.0005%
to about 0.3% of at least one metal selected from Zr, Si, Ce, Ti,
and B, and the balance Al, would have been obvious to one of
ordinary skill in the art in view of JP ‘683, JP ‘637 or JP ‘128
14
Page: Previous 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Next
Last modified: November 3, 2007