US PATENT SUBCLASS 528 / 96
.~.~.~ Phenolic reactant contains a heterocyclic group other than a 1,2-epoxy group per se

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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}
87  DF  .~.~ From 1,2-epoxy-containing phenolic reactant or with 1,2-epoxy-containing reactant {12}
96.~.~.~ Phenolic reactant contains a heterocyclic group other than a 1,2-epoxy group per se

DEFINITION

Classification: 528/96

(under subclass 87) Subject matter wherein the phenol, phenol ether, or inorganic phenolate reactant contains at least one heterocyclic group which is not a 1, 2-epoxy-containing ring.

SEE OR SEARCH THIS CLASS, SUBCLASS:

101, for a phenol, phenol ether, or inorganic phenolate containing as the sole heterocyclic ring a 1, 2-epoxy group fused to a carbocyclic ring.

105, for a phenol, phenol ether, or inorganic phenolate reactant containing only a single 1, 2-epoxy group.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for a definition of the term "heterocyclic".