US PATENT SUBCLASS 570 / 147
.~.~.~.~ Substituting halogen for different halogen or hydrogen

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}
143  DF  .~.~.~ Preparing benzene ring containing compound {3}
147.~.~.~.~ Substituting halogen for different halogen or hydrogen

DEFINITION

Classification: 570/147

Substituting halogen for different halogen or hydrogen:

(under subclass 143) Process wherein halogen is exchanged for a different halogen or hydrogen.