Appeal No. 1997-0551
Application 08/157,429
produce 1,1-dichloro-2,2,3,3,3-pentafluoropropane but for the
catalyst (answer, paragraph bridging pages 4 and 5). However,
the claimed process on appeal herein requires the production
of 1,3-dichloro-1,1,2,2,3-pentafluoropropane in addition to
the other penta- fluoropropane produced. Additionally, the
only specific disclosure to the production of 1,1-dichloro-
2,2,3,3,3-pentafluoropropane in Yale appears to be the result
of the reaction of tetrafluoroethylene with cesium fluoride
and chloro-form as reported in Example 4 of Yale. Hence, the
examiner’s position on Yale’s teachings is not in accord with
the patent specification of Yale. While dichlorofluoromethane
is disclosed as a possible reactant in Yale (column 1, lines
58-67), there is no disclosure of the presently claimed cata-
lyst for use with that particular reactant or the obtention of
the reaction products called for in the appealed claims using
dichlorofluoromethane as a reactant.
Seigneurin (column 2, lines 50-60) discloses, inter
alia, a process for reacting a fluoro-halogenated ethylene
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