US PATENT SUBCLASS 528 / 229
.~.~.~ Nitrogen-containing reactant contains an amine group

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}
220  DF  .~ FROM KETONE OR KETENE REACTANT {4}
228  DF  .~.~ With nitrogen-containing reactant {1}
229.~.~.~ Nitrogen-containing reactant contains an amine group

DEFINITION

Classification: 528/229

(under subclass 228) Subject matter wherein a nitrogen reactant contains at least on nitrogen atom as an amino-nitrogen.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for the definition of "amine".