US PATENT SUBCLASS 526 / 256
.~.~ From monomer containing sulfur atom as part of a heterocyclic 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}
256.~.~ From monomer containing sulfur atom as part of a heterocyclic ring {1}
257  DF  .~.~.~> Sulfur-containing ring contains additional hetero atom, i.e., N, O, Se, Te

DEFINITION

Classification: 526/256

From monomer containing sulfur atom as part of a heterocyclic ring:

(under subclass 72) Subject matter wherein an unsaturated monomer contains one or more carbon atoms covalently bonded in a ring system with at least one hetero atom of oxygen, nitrogen, sulfur, selenium, or tellurium and there are no other atoms in the ring, with the proviso that at least one of the atoms in the ring is sulfur.