US PATENT SUBCLASS 528 / 168
.~.~.~ Nitrogen-containing reactant

Current as of: June, 1999
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528 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
86  DF  .~ FROM PHENOL, PHENOL ETHER, OR INORGANIC PHENOLATE {15}
167  DF  .~.~ Phosphorus-containing reactant {2}
168.~.~.~ Nitrogen-containing reactant

DEFINITION

Classification: 528/168

(under subclass 167) Subject matter wherein a nitrogen-containing compound is a reactant.

(1) Note. The nitrogen atom may be in any of the reactants and the phosphorus atom may be in any of the other reactants, or they may be in the same nonphenolic reactant, or in the same phenolic reactant.