Appeal No. 97-1408
Application No. 08/210,979
According to the examiner (Answer, pages 3 and 4):
2. Claims 1-18 remain rejected under 35 U.S.C. § 103
as being unpatentable over Schutten et al. (U.S.
Patent 4,951,185) in view of Resonant Power
Processors: Part II - Methods of Control, by
Oruganti et al, 1984 (as cited in PTOL-1449 herein).
The Schutten et al. (U.S. Patent 4,951,185)
reference discloses the general background of the
invention. However, Schutten . . . does not
explicitly show controlling a series resonant
inverter by linear control signal v. frequency
method. Note that Figure 5 of Schutten . . . seems
to implicitly suggest the required monotonically
decreasing phase to frequency aspect as claimed.
Nevertheless, . . . Oruganti . . . show[s]
controlling a series resonant inverter by linear
control signal v. frequency method. It would have
been obvious at the time the invention was made to
control a series resonant inverter by linear control
signal v. frequency method of . . . Oruganti . . . .
into the circuit of Schutten . . . (if not already
part of Schutten et. al’s disclosure), for the well
known reason of frequency control of a series
resonant converter.
See page 869 column 1 at 2.2 et seq. of . . .
Oruganti . . . .
In response to appellants’ arguments in the brief, the
examiner listed (Answer, pages 4 and 5) claim phrases in bold-
faced type followed by equivalents allegedly disclosed by
Schutten as follows:
Table of equivalents
phase angle actual value -- (resonant capacitor
voltage, resonant inductor current, voltage applied
3
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