Appeal No. 1999-1349
Application No. 08/110,115 Page 6
teach a composition as required by all of the rejected claims.
Indeed, independent claim 1 and the other appealed claims require
a vapocoolant liquid composition that includes 40 to 55 weight
percent of a hydro fluorocarbon selected from 1,1-difluoroethane,
1,1,1,2-tetrafluoroethane, 1,3-trifluoro-2-fluoro propane, and
mixtures thereof together with 60 to 45 percent of ethyl alcohol
with the proviso that the composition is substantially free of
chlorinated hydrocarbons. Seney, on the other hand, is
interested in generating a low temperature air blanket over
tissues that are involved in medical care and for which the
patient may need pain relief. A hand piece is formed having a
closed refrigeration cycle with a refrigerant such as Freon being
employed to cool a forced flow of sterilized air. See, e.g.,
columns 1 and 2 of Seney.
Bargigia, the other applied reference, is concerned with
propellant compositions for aerosols which can be used for
supplying paints, anti-perspiration products, insecticides, home
cleaning products, etc. See, e.g., the abstract and column 4,
lines 27-34 of Bargigia. Bargigia (column 2) may use fluorinated
or chlorofluorinated components in the propellant composition
together with hydrocarbons and specified halogenated organic
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