Appeal No. 1997-0058
Application No. 08/300,399
portion of the current spike above the meaningful part of the
curve is eliminated, such that the slew rate or slope of that
portion becomes low. However, the portion of the current
spike below the meaningful part of the sense signal curve of
Figure 2 remains unchanged with the same high slope as the
original current spike. Thus, White does not prevent the
slope of the current sense signal from exceeding a maximum
slew rate, since a portion of the signal remains at a high
slew rate. Accordingly, White fails to meet every limitation
of the claim, and we cannot sustain the anticipation rejection
of claim 6.
For claims 2, 5, 13, 16, and 17, the examiner attempts
(Answer, page 4) to combine Kusano with White. The examiner
states (Answer, page 5) that it would have been obvious to
replace White's filter with the transconductance amplifier in
Kusano's Figure 2 "because active filters that utilize a
feedback technique are preferred when fabricating integrated
circuits because of the difficulty in constructing inductance
elements."
As asserted by appellants (Brief, page 12), there is no
teaching or suggestion in the art to combine White and Kusano
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