US PATENT SUBCLASS 423 / 576.2
.~.~.~.~ With specified procedure for sulfur recovery or specified conditions for producing sulfur in more recoverable form

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}
573.1  DF  .~.~.~ Hydrogen sulfide {4}
576.2.~.~.~.~ With specified procedure for sulfur recovery or specified conditions for producing sulfur in more recoverable form

DEFINITION

Classification: 423/576.2

With specified procedure for sulfur recovery or specified conditions for producing sulfur in more recoverable form:

(under subclass 573.1) Subject matter which includes a step for recovering elemental sulfur beyond merely "removing" or "recovering" the sulfur or in which conditions other than mere temperature regulation are specified for obtaining elemental sulfur in more recoverable form, for example, by employing an additive to assure sulfur in crystalline form.

SEE OR SEARCH CLASS

23, Chemistry: Physical Processes,

293, and 308 for processes of acting upon sulfur without a chemical reaction.