US PATENT SUBCLASS 527 / 309
.~.~.~ Nitrogen-containing reactant

Current as of: June, 1999
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527 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {6}
300  DF  .~ FROM CARBOHYDRATE OR DERIVATIVE AS A REACTANT {8}
305  DF  .~.~ With aldehyde or derivative as a reactant other than as an aldose {2}
309.~.~.~ Nitrogen-containing reactant

DEFINITION

Classification: 527/309

Nitrogen-containing reactant:

(under subclass 305) Subject matter wherein there is at least one nitrogen-containing reactant.