US PATENT SUBCLASS 528 / 210
.~.~ Phenolic reactant contains a nitrogen atom

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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}
210.~.~ Phenolic reactant contains a nitrogen atom

DEFINITION

Classification: 528/210

(under subclass 86) Subject matter wherein a reactant is a phenol, phenol ether, or inorganic phenolate containing at least one nitrogen atom.

SEE OR SEARCH THIS CLASS, SUBCLASS:

99, for a polymer derived from a phenolic nitrogen-containing 1, 2-epoxy reactant or from a phenolic nitrogen containing material and a 1, 2-epoxy reactant.

183, for a polymer derived from at least a polycarboxylic acid or derivative and at least one phenolic reactant wherein the phenolic reactant may contain a nitrogen atom.