Appeal No. 1997-0581
Application No. 08/168,549
providing an adequate explanation of the extensive data
presented in the examples of the specification. It is not
within the Board’s province to ferret out appropriate data
from the examples in the specification to support a conclusion
of unexpected results. See In re Borkowski, 505 F.2d 713,
719, 184 USPQ 29, 33 (CCPA 1974).
In addition, appellants have not demonstrated that the
showing in the examples is reasonably commensurate in scope
with the degree of protection sought by the appealed claims.
In re Greenfield, 571 F.2d 1185, 1189, 197 USPQ 227, 230 (CCPA
1978). While the showing is limited to feeding particular
reactants at particular rates to different specific
temperature zones of a particularly sized co-rotating twin-
screw extruder having particular rotating speeds and the
particular back pressure (150 psi), the appealed claims are
not so limited. Appellants have not shown that the alleged
improvements applicable to this limited showing can be
reasonably extrapolated to support the claimed subject matter
involving materially different process conditions, such as
temperature, pressure, feeding and screw rotating conditions,
than those exemplified in the showing. Note that appellants
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