US PATENT SUBCLASS 23 / 308 S
.~.~ Sulfur

Current as of: June, 1999
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23 /   HD   CHEMISTRY: PHYSICAL PROCESSES

293 R  DF  PHYSICAL PROCESSES {7}
308 R  DF  .~ Melting out {1}
308 S.~.~ Sulfur

Unofficial Alpha Subclasses: R S

DEFINITION

Classification: 23/308

(under subclass 293) Processes drawn to or including as a

significant step the melting out of fusible substances by heat.

SEE OR SEARCH THIS CLASS, SUBCLASS:

280, for melting separators.

SEE OR SEARCH CLASS

554, Organic Compounds,

23, for processes of rendering fats, fatty oils or fatty oil acids. See also the notes thereto.