Appeal No. 1996-1158
Application No. 08/077,599
and 35 stand allowable over the prior art of record, but are
objected to for depending upon a rejected claim.
According to appellant (Brief, page 5), “rejected claims
6 through 11, 13, 22, 33, 34 and 36 stand [or fall] together
in the first group.” Therefore, for purposes of this appeal,
we will limit our discussion to the broadest independent claim
on appeal, claim 33, in accordance with 37 CFR §
1.192(c)(5)(1993). Claim 33 reads as follows:
33. A process for producing carbon black comprising:
(a) forming a combustion gas stream by reacting a fuel
with a first oxidant;
(b) reacting a first carbon black yielding feedstock
with the combustion gas stream to form a reaction
stream containing a first carbon black;
(c) reacting the reaction stream of step (b),
downstream, with a second oxidant and a second
carbon black yielding feedstock to produce
additional carbon black;
(d) carrying out the process of steps (a), (b) and (c)
so that the amount of fuel utilized per pound of
carbon black produced by the process of steps (a),
(b) and (c) is less than the fuel utilized per pound
of carbon black to form the first carbon black
produced by the process of steps (a) and (b);
(e) cooling, separating and recovering the carbon black
formed by the process of steps (a) through (d).
The prior art references of record relied upon by the
2
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007