Appeal No. 95-2719
Application No. 08/090,676
to about 2.0 percent by weight of said composition of calcium
tungstate.
The examiner relies upon the following references as
evidence of obviousness:
Taguchi et al. (Taguchi) 4,585,703 Apr. 29, 1986
Oka et al. (Oka) 4,696,989 Sep. 29, 1987
Hannecart 4,898,906 Feb. 6, 1990
As is readily apparent from illustrative claim 1 above,
appellants' claimed invention is directed to the addition of
calcium tungstate to a vinylidene fluoride polymer in order to
render the polymer flame retardant along with a reduced smoke-
generating capability.
Appealed claims 1-4 stand rejected under 35 U.S.C. § 103
as being unpatentable over Hannecart and Oka in view of
Taguchi.
Upon careful consideration of the opposing arguments
presented on appeal, we will not sustain the examiner's
rejection.
Hannecart employs molybdenum derivatives, such as calcium
molybdate, as a smoke reducer and flame retardant for
vinylidene fluoride polymers. Recognizing that Hannecart
provides no teaching or suggestion of utilizing appellants'
calcium tungstate in composition with a vinylidene fluoride
-2-
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