US PATENT SUBCLASS 570 / 177
.~.~.~ Purification or recovery

Current as of: June, 1999
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570 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
101  DF  .~ HALOGEN CONTAINING {21}
123  DF  .~.~ Fluorine containing {21}
177.~.~.~ Purification or recovery {3}
178  DF  .~.~.~.~> Including distillation
179  DF  .~.~.~.~> Solid sorbent utilized
180  DF  .~.~.~.~> Including extraction with organic liquid

DEFINITION

Classification: 570/177

Purification or recovery:

(under subclass 123) Process of purifying or recovering a fluorine containing compound.