US PATENT SUBCLASS 528 / 382
.~.~.~ Sulfur dioxide is a reactant


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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}
381  DF  .~.~ From inorganic sulfur-containing reactant {4}
382.~.~.~ Sulfur dioxide is a reactant {2}
383  DF  .~.~.~.~> Polymerizing in the presence of a specified material other than a reactant {2}
386  DF  .~.~.~.~> With reactant containing only hydrogen and carbon atoms


DEFINITION

Classification: 528/382

(under subclass 381) Subject matter wherein the inorganic reactant containing sulfur is sulfur diozide (SO2).