US PATENT SUBCLASS 528 / 182
.~.~.~.~ Material is a nitrogen-containing compound


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}
176  DF  .~.~ With polycarboxylic acid or derivative as reactant {8}
179  DF  .~.~.~ Polymerizing in the presence of a specified material other than a reactant and other than Group IA or Group IIA material as sole metal atom {2}
182.~.~.~.~ Material is a nitrogen-containing compound


DEFINITION

Classification: 528/182

(under subclass 179) Subject matter wherein the specified material is a nitrogen-containing compound.