US PATENT SUBCLASS 528 / 381
.~.~ From inorganic sulfur-containing reactant

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}
381.~.~ From inorganic sulfur-containing reactant {4}
382  DF  .~.~.~> Sulfur dioxide is a reactant {2}
387  DF  .~.~.~> Carbon disulfide or hydrogen sulfide is reactant
388  DF  .~.~.~> Inorganic sulfur reactant contains at least one metal atom or contains an ammonium ion
389  DF  .~.~.~> Elemental sulfur is reactant

DEFINITION

Classification: 528/381

(under subclass 373) Subject matter wherein a sulfur reactant is elemental sulfur or a sulfur-containing inorganic compound.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, See the Glossary for a definition of "organic compound". An inorganic compound for purposes of this subclass is a compound which does not fit the parameters of said definition.