US PATENT SUBCLASS 423 / 577
.~.~.~ Reacting metal sulfide with sulfur dioxide

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

511  DF  SULFUR OR COMPOUND THEREOF {4}
567.1  DF  .~ Elemental sulfur {5}
571  DF  .~.~ Reacting a sulfide {3}
577.~.~.~ Reacting metal sulfide with sulfur dioxide

DEFINITION

Classification: 423/577

(under subclass 571) Processes in which the sulfide is that of a metal and is reacted with sulfur dioxde (SO2).