Appeal No. 1999-1937
Application No. 08/470,122
Appellants admit [supplemental brief-page 4] that DeDoncker relates to a
DC/DC power converter which operates by converting a first DC voltage into an AC
voltage which is transformed to a second AC voltage which in turn is converted to a
DC output voltage. Appellants also admit that Dishner relates to a conversion device
for converting a first AC voltage to a second AC voltage by converting the first AC
voltage to a DC voltage which in turn is converted to a second DC voltage which is
then converted to a second AC voltage” [supplemental brief-page 4]. Appellants
conclude that because the object of DeDoncker is to convert a first DC voltage into a
second DC voltage, and because the object of the instant invention is to convert a
first AC voltage into a second AC voltage, “it would be impossible to modify
DeDoncker...to produce the present invention” [supplemental brief-page 4].
After reviewing the applied references, it is our view that the examiner has
not made out a prima facie case of obviousness with regard to the claimed subject
matter.
First, with regard to appellants’ confusion as to which reference is the
“primary” reference and which is the “teaching” reference, we take the teachings of
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