US PATENT SUBCLASS 528 / 270
.~.~ From aldehyde or aldehyde derivative as sole reactant (includes copolymer of only aldehydes or aldehyde derivatives)

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}
230  DF  .~ FROM ALDEHYDE OR DERIVATIVE THEREOF AS REACTANT {12}
270.~.~ From aldehyde or aldehyde derivative as sole reactant (includes copolymer of only aldehydes or aldehyde derivatives)

DEFINITION

Classification: 528/270

(under subclass 230) Subject matter wherein a polymer is derived solely from reactants which are aldehydes or aldehyde derivatives or mixtures thereof.