Appeal No. 1997-1364
Application 08/343,276
alternative levels of an input signal applied to the input
terminal, each of the charge pump circuits including:
a pumping capacitor;
a p-channel pumping transistor having a control electrode
and having a conduction path connected in a series circuit
path with the pumping capacitor between the input terminal and
the substrate; and
a bootstrap circuit connected between the input terminal
and the control electrode for enabling the p-channel pumping
transistor to conduct charge from the pumping capacitor to the
substrate without imparting all of a threshold voltage of the
p-channel pumping transistor as a voltage loss.
The following references are relied on by the examiner:
Truong 4,733,108 Mar. 22, 1988
Furuyama 5,343,087 Aug. 30, 1994
(filing date June 10, 1991)
Claims 5, 6, 14, and 15 stand rejected under 35 U.S.C.
§ 103. As evidence of obviousness, the examiner relies upon
Truong alone as to claims 14 and 15, with the addition of
Furuyama as to claims 5 and 6.1
Rather than repeat the positions of the appellants and
the examiner, reference is made to the brief and the answer
for the respective details thereof.
OPINION
A separate rejection of claim 14 under 35 U.S.C. § 103 over a patent to Douglas was1
withdrawn at page 2 of the answer.
2
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