US PATENT SUBCLASS 528 / 194
.~.~.~ Two or more polycarboxylic acids or derivatives as 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}
176  DF  .~.~ With polycarboxylic acid or derivative as reactant {8}
194.~.~.~ Two or more polycarboxylic acids or derivatives as reactants

DEFINITION

Classification: 528/194

(under subclass 176) Subject matter wherein a polymer is derived from two or more polycarboxylic acids or polycarboxylic acid derivatives.

SEE OR SEARCH THIS CLASS, SUBCLASS:

183+, for a polymer derived from an amino-containing polycarboxylic acid or amino-containing derivative of a polycarboxylic acid, or for a polymer derived from a non(amino nitrogen)-containing polycarboxylic acid or non(amino nitrogen)-derivative and an amino-containing reactant.