US PATENT SUBCLASS 570 / 141
.~.~.~.~ Nitrogen containing

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}
140  DF  .~.~.~ From organic compound containing an element other than carbon, hydrogen, or halogen {2}
141.~.~.~.~ Nitrogen containing

DEFINITION

Classification: 570/141

Nitrogen containing:

(under subclass 140) Process wherein the organic compound contains nitrogen.