Appeal No. 95-0325
Application 07/859,616
This is a decision on appeal under 35 U.S.C. § 134 from the final rejection of claims 27-33
and 43-47, all of the claims pending in the application.
The claimed invention is best illustrated by claim 27 reproduced below.
27. An arrangement comprising:
a source operative to provide an AC voltage at a pair of AC terminals; and
a circuit connected with the AC terminals and operable to power a gas
discharge lamp; the circuit being characterized by: (i) providing a conditioned voltage at
a pair of terminals; and (ii) including a transistor conducting intermittently at a time-
varying switching frequency, thereby to maintain the absolute magnitude of the
conditioned voltage substantially constant.
The examiner relies on the following reference:
Kuroi et al. (Kuroi) 4,187,448 February 5, 1980
The specification stands objected to under 35 U.S.C. § 112, first paragraph, as failing to
provide a written description for the terms "conducting intermittently at a time-varying switching
frequency" in claims 27, 43, and 47; "time-varying at a frequency equal to twice the frequency of
the AC voltage" in claim 28; "a transistor conducting intermittently with a time-varying duty-cycle
at a switching frequency" in claim 31; and "the duty-cycle varies at a frequency equal to twice the
frequency of the AC voltage" in claim 32 (Final Rejection, Paper No. 26, page 2). Claims 27-33
and 43-47 stand rejected under § 112, first paragraph, for the reasons set forth in the objection.
Claims 27-33 and 43-47 stand rejected under 35 U.S.C. § 102(b) as being anticipated by
Kuroi.
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