Appeal No. 96-1844
Application No. 08/125,396
12-17 separate power supply terminals are taught 'which
ensures that any changes in load currents during switching do
not cause
spiking at power supply terminal.'" The examiner concludes
that "[i]t would have been obvious to a skilled artisan to
apply the teachings of Jarrett to provide separate power
terminals in the device of Fujita in order to avoid power
spikes as taught by Jarrett."
Jarrett does suggest that using separate power supply
terminals avoids spiking. However, Jarrett says nothing about
supplying a semiconductor substrate with a separate power
supply. Further, Fujita already includes multiple power
supply lines to reduce noise passing through the power supply
line. Therefore, without some specific teaching to use a
separate bias means for the semiconductor substrate, one of
ordinary skill in the art would not have been motivated to add
yet another power supply terminal for the semiconductor
substrate in the device of Fujita. Consequently, the broad
suggestion of Jarrett to use separate power supply terminals
is insufficient to establish a prima facie case of obviousness
in this case.
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