Appeal No. 2001-0740
Application 09/054,415
Appellants argue that Mizuide does not teach or suggest the
relationship among current sources and active devices recited in
claim 11 (Br17).
The examiner states that it would have been obvious to
replace the bipolar transistors in Mizuide with field effect
transistors (FETs) to improve ease of manufacturing, which
structure would then satisfy the structural limitations (EA21).
The examiner's reasoning is based on nothing but hindsight.
Moreover, it is just not clear that replacing bipolar transistors
with FETs will meet the claimed structure. The rejection of
claim 11 is reversed.
Claim 14
Appellants argue that Mizuide does not disclose a "clocked
amplifier" and fails to disclose the step of "providing different
power levels to said amplifier during at least two respective
time intervals separated by clock signals" (Br17-18).
The examiner states that when used within an operational
amplifier with a switched capacitor input circuit, the overall
circuit could be deemed a clocked amplifier having different
power levels (EA21).
The examiner provides no reference or motivation for using
the differential comparator with hysteresis characteristics of
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