US PATENT SUBCLASS 23 / 298
.~.~.~ From natural sources

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

293 R  DF  PHYSICAL PROCESSES {7}
295 R  DF  .~ Crystallization {8}
296  DF  .~.~ Selective {2}
298.~.~.~ From natural sources

DEFINITION

Classification: 23/298

(under subclass 296) Processes wherein the system being crystallized is found in nature, i.e., naturally occurring brines containing a number of salts.

SEE OR SEARCH THIS CLASS, SUBCLASS:

303, for processes of crystallizing Na Cl from brines containing this compound as the principal recoverable constituent.