Appeal No. 1996-1896
Application No. 08/206,973
obtain desired coating thicknesses in a coating process, the
examiner has not supplied any evidence that adjusting the
amount of the hydrocarbon component fed to the fluidized bed
is useful for obtaining the claimed product, namely “a precise
thickness of deposit of pyrocarbon of uniform crystalline
structure and uniform physical properties”. The Bokros
declaration (expert declaration) submitted by appellant
indicates that those of ordinary skill in the art believed
that the flow rate of hydrocarbon needs to be maintained at a
constant level to obtain uniform crystalline structure. See
page 3. Emken and Accuntius relied upon by the examiner also
indicate that to obtain a precise thickness of deposit of
pyrocarbon of uniform crystalline structure and uniform
physical properties, it is desirable to maintain the overall
chemical composition at a constant desired value. See, e.g.,
Emken, column 2, lines 1-9 and 24-41, column 3, lines 24-45
and column 4, lines 5-20, and Accuntius, column 1, lines 39-
51. In other words, it is desirable to maintain the flow rate
of hydrocarbon at a constant level to prevent the change in
the overall chemical composition.
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