US PATENT SUBCLASS 423 / 542
.~.~.~ Burning or roasting a sulfur compound

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

511  DF  SULFUR OR COMPOUND THEREOF {4}
512.1  DF  .~ Oxygen containing {11}
539  DF  .~.~ Sulfur dioxide {4}
542.~.~.~ Burning or roasting a sulfur compound

DEFINITION

Classification: 423/542

(under subclass 539) Processes including the step of causing a compound of sulfur to be combusted with a flame or to be heated at high temperature or to be oxidized by heat in a current of air.