US PATENT SUBCLASS 423 / 569
.~.~ Reducing sulfur dioxide by carbon containing material

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}
569.~.~ Reducing sulfur dioxide by carbon containing material {1}
570  DF  .~.~.~> Catalytic reaction

DEFINITION

Classification: 423/569

(under subclass 567.1) Processes which include the step of reducing the valence of the sulfur in sulfur dioxide from +4 with a material containing carbon to form the elemental sulfur having a valence of zero.