US PATENT SUBCLASS 526 / 205
.~.~.~.~ Sulfur and nitrogen together in a single ring

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}
89  DF  .~.~ Polymerizing in the presence of a specified material other than monomer {28}
204  DF  .~.~.~ Material contains heterocyclic compound {1}
205.~.~.~.~ Sulfur and nitrogen together in a single ring

DEFINITION

Classification: 526/205

(under subclass 204) Subject matter wherein the ring containing compound has at least one atom of sulfur and nitrogen in a single closed ring.