US PATENT SUBCLASS 528 / 377
.~.~ From heterocyclic compound containing a sulfur atom as a ring member

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}
373  DF  .~ FROM SULFUR-CONTAINING REACTANT {5}
377.~.~ From heterocyclic compound containing a sulfur atom as a ring member {2}
378  DF  .~.~.~> Polymerizing in the presence of a specified material other than a reactant {1}
380  DF  .~.~.~> Heterocyclic reactant contains a ring composed solely of carbon atoms and a single sulfur atom

DEFINITION

Classification: 528/377

(under subclass 373) Subject matter wherein at least one reactant contains a sulfur atom as a ring atom of a heterocyclic ring.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for a definition of the term "heterocyclic".