Appeal No. 1997-0551
Application 08/157,429
derivative such as tetrafluoroethylene,
difluorodichloroethylene or trifluorochloroethylene,
preferably 1,2-difluorodichloro- ethylene with a halogenated
methane such as carbon tetrachloride, chloroform and methylene
chloride to form fluoro-chlorinated propane. Production of a
difluorohexachloropropane is exempli- fied in Seigneurin as a
product. Seigneurin does disclose BF as a known catalyst for
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forming halogenated propane derivatives and gallium halides
(gallium chloride or gallium bromide) as catalysts as
generally noted by the examiner (answer, page 4). However, the
combined teachings of Yale and Seigneurin do not suggest the
particular reaction called for in the appealed claims. Nor
can we follow, much less agree with, the examiner’s logic in
combining the teachings of those references so as to somehow
arrive at the process claimed herein.
The third reference the examiner applies, Aoyama,
actually does teach a process for forming products from the
reaction of reactants as called for by appellants’ claims.
The use of an anhydrous aluminum chloride catalyst or an
aluminum
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