US PATENT SUBCLASS 423 / 559
.~.~.~ Lead containing

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}
544  DF  .~.~ Sulfate {7}
559.~.~.~ Lead containing

DEFINITION

Classification: 423/559

(under subclass 544) Products or processes wherein the compound contains lead.

SEE OR SEARCH THIS CLASS, SUBCLASS:

97, for processes of treating mixtures to recover lead sulfate and in which the process includes the step of volatizing lead.