Appeal No. 1998-1616
Application No. 08/570,633
from the surface of the foil substrate (column 1, lines 20-
59). On the other hand, Minten blows compressed air against
the surface of the dispersion immersed board to unplug any
holes of the board that may still retain plugs of dispersion
and to remove excess liquid carbon-black containing dispersion
from the face of the board (column 10, lines 1-6). Thus, the
purpose for which Altenpohl’s foamed latex rolls are provided
differs from the purpose for which Minten blows compressed air
against the substrate surface. In addition, it does not
appear to us that there is any teaching in Altenpohl that
would have suggested to one of ordinary skill in the art that
Altenpohl’s foam latex rolls would be of any particular use in
removing water, air bubbles, and/or particles entrapped within
the wiring board holes of Minten, notwithstanding Altenpohl’s
statement at column 1, lines 54-59, that the foamed latex
rolls exhibit a “sucking effect” in removing loose particles
from the surface of the foil. In this regard, it is not
apparent that Altenpohl’s sucking of loose particles from the
surface of the foil would be effective in removing material
from the holes of Minten’s board, since material in the holes
would generally lie substantially below the surface. Further,
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