US PATENT SUBCLASS 526 / 265
.~.~.~ 6-membered ring contains a single nitrogen atom

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {8}
72  DF  .~ POLYMERS FROM ONLY ETHYLENIC MONOMERS OR PROCESSES OF POLYMERIZING, POLYMERIZABLE COMPOSITIONS CONTAINING ONLY ETHYLENIC MONOMERS AS REACTANTS OR PROCESSES OF PREPARING {43}
258  DF  .~.~ From monomer containing nitrogen atom as part of a heterocyclic ring {6}
265.~.~.~ 6-membered ring contains a single nitrogen atom

DEFINITION

Classification: 526/265

(under subclass 258) Subject matter wherein the nitrogen-containing ring contains six atoms and wherein only one of the atoms is nitrogen.