Appeal No. 95-3623
Application 07/714,407
a developing solution containing a combination of an acetylenic
alcohol surface active agent and a quaternary ammonium salt
surface active agent.
Regarding the amount of the surface active agent,
appellants’ specification states (page 10):
The surface active agent may be used preferably in an
amount of from 0.01 to 5% by weight, more preferably
from 0.03 to 3% by weight, most preferably from 0.05 to
2% by weight. An amount of the agent smaller than
0.01% by weight would result in insufficient
wettability or defoamability and an amount larger than
5% by weight would spoil smoothness of pattern shapes.
The teaching that wettability or defoamability would be
insufficient if the amount of surface active agent is below
0.01 wt% would not make sense if the surface active agent
referred to is one component of a surface active agent
combination and one or more other surface active agent components
are present which could provide sufficient wettability and
foamability. Thus, the specification reasonably conveys that the
0.01 wt% lower limit of the amount of surface active agent and,
accordingly, the preferred range, are those of the total surface
active agent. For this reason and because, as discussed above,
appellants’ specification reasonably conveys that appellants had
possession as of their filing date of the presently-recited
combination of an acetylenic alcohol surface active agent and a
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Last modified: November 3, 2007