US PATENT SUBCLASS 528 / 340
.~.~.~.~ From at least two organic polyamines

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}
271  DF  .~ FROM CARBOXYLIC ACID OR DERIVATIVE THEREOF {10}
332  DF  .~.~ With organic amine, or from organic amine salt of a carboxylic acid {2}
335  DF  .~.~.~ From dicarboxylic acid or derivative thereof and an organic amine, or from an organic amine salt of a dicarboxylic acid {13}
340.~.~.~.~ From at least two organic polyamines

DEFINITION

Classification: 528/340

(under subclass 335) Subject matter wherein a polymer is derived from at least two organic polyamines.

(1) Note. An organodiamine salt of a dicarboxylic acid,

wherein each of the diamine salt groups are different and wherein each is a polyamine, would be properly classified herein.