Appeal No. 95-2719
Application No. 08/090,676
polymer, the examiner relies upon Taguchi. However, Taguchi
is directed to a method of treating wood or a woody material
to improve its water resistance, weatherability,
rustproofness, water-resistant and solvent-resistant fire
retardancy, bug resistance, corrosion resistance and ease of
processing (column 1, lines 5 et seq.). Taguchi's process
entails treating the wood with a mixture or reaction product
of a polymeric compound and a phosphonic acid compound and,
optionally, the treatment composition may contain any one of a
number of silicon-containing inorganic compounds, magnesium-
containing inorganic compounds, calcium-containing inorganic
compounds, etc. (column 1, lines 26-39). In a list of
calcium-containing inorganic compounds that impart a higher
level of fire retarding property to the woody material,
Taguchi discloses calcium tungstate.
The flaw in the examiner's reasoning is that neither
Taguchi, nor any other prior art of record, teaches or suggests
the use of calcium tungstate as a flame retardant for a
vinylidene fluoride polymer. Indeed, the examiner has
presented no evidence that calcium tungstate is a flame
retardant for any material other
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