Appeal No. 2002-2063
Application No. 09/635,093
may be low-boiling hydrocarbons (column 9, lines 55-61).
Finally, as a mold release agent, we find that fatty acid esters
such as methyl stearic acid ester are disclosed, in amounts
preferably from 5-8 percent by weight (column 12, lines 18-20 and
46-53).
Thus, each claimed element reasonably appears to be present
and capable of reacting to form a two-component polyurethane
binder system. Furthermore, when a suggested low-boiling
hydrocarbon is selected for the polyisocyanate, the restriction in
the claim that there be more FAME than high-boiling hydrocarbon is
fulfilled as well.
Discussion
Appellants initially argue that Furness discloses only high
boiling aromatic hydrocarbon solvents for dissolving the
polyisocyanate component of a three-component binder. (Appeal
Brief, page 6, lines 6-12). This argument is not well taken.
The examiner has noted that Furness discloses acetone,
ketones, monoester-monoethers of alkylene glycols,
monochlorobenzene, aliphatic hydrocarbons, and low-boiling
aromatic hydrocarbons (Examiner’s Answer, page 3, lines 8-13).
This has not been challenged by the appellants. Our
independent review of Furness reveals that the various types of
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