Appeal No. 95-0347
Application 08/056,681
not dispute the appellants’ assertion that Muraoka discloses a
thyristor and that a thyristor is not a field effect transistor.
Rather, the examiner points to an equivalent circuit to Muraoka’s
thyristor which includes a field effect transistor.
The equivalent circuit relied on by the examiner is shown
in Muraoka’s Figure 2 and includes a junction field effect
transistor T2 connected to a p-n-p bipolar transistor T1.
Specifically, the drain of the field effect transistor T2 is
connected to the base of the bipolar transistor T1. A first
terminal 9 is connected to the source of the field effect
transistor; a second terminal is connected to the emitter of the
bipolar transistor, and a third terminal is connected to the gate
of the field effect transistor.
The examiner’s position is misplaced and does not adequately
support the anticipation rejection. The multi-component
equivalent circuit shown in Muraoka’s Figure 2 is merely a
functional equivalent. There is no disclosure as to the internal
structure of the field effect transistor component T2 in the
equivalent circuit. The internal structure of the field effect
transistor T2 shown in Figure 2 is not disclosed. The examiner
has articulated no reasonable basis to read Muraoka’s description
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Last modified: November 3, 2007