US PATENT SUBCLASS 528 / 204
.~.~.~ Two or more phenolic reactants

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}
196  DF  .~.~ With reactant having halo-C(=O)-halo, halo-C(=O)-O-, or -O-C(=O)-O- group {5}
204.~.~.~ Two or more phenolic reactants

DEFINITION

Classification: 528/204

(under subclass 196) Subject matter wherein a polymer is derived from at least two or more phenols, phenol ethers, or inorganic phenolates, or mixtures of two or more phenolic reactants.