Appeal 97-2360
Application 08/234,495
with Simmonds or Friswell in connection with tracing of
hydrocarbons.
Simmonds admittedly deals with tracers. But, its tracers
do not fall within the scope of the claims on appeal.
Begley while showing the interchangeability of
perfluorocycloalkanes (e.g., perfluoromethylcyclohexane) and
perfluorobicyclic compounds (e.g., perfluoroadamantane), does
so in the context of a study for the detection of a range of
perfluorocarbon tracers suitable for long-range atmospheric
studies.
Applicants concede that a process similar to their
process is known, but that process uses chlorohydrocarbons and
chlorofluorocarbons, both of which are known to have adverse
effects on the ozone layer (specification, page 1, lines 10-
20). For that reason, it is true that one might be motivated
to use perfluoro compounds which are known to overcome the
ozone problem. The difficulty is that applicants' perfluoro
compounds are used in amounts considerably smaller than the
admitted prior art described in the specification.
In the end, what surfaces in this case is that one
skilled in the art needs the road map of applicants'
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Last modified: November 3, 2007