(under the class definition) Compositions specialized and designed for, or peculiar to, use in producing refrigeration, or heat or energy exchange, by operations that include vaporization, or expansion or compression, of a substance or of materials containing the same.
(1) Note. This subclass provides, inter alia, for (1) claiming admixtures of ingredients, or claims to an old compound limited to use as a heat exchange agent, (2) processes of heat exchange comprising known heat exchange steps broadly recited and distinguished solely by the composition or compound used, and (3) apparatus with the composition or compound therein, where characteristics of apparatus structure are not claimed. The preceding are placed in this class even though freezing or boiling points or temparatures of use are specified.
SEE OR SEARCH CLASS
165, Heat Exchange,
104.11+, for a heat exchange device with an intermediate fluent material receiving and discharging heat.
