US PATENT SUBCLASS 423 / 556
.~.~.~ Aluminum 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}
556.~.~.~ Aluminum containing

DEFINITION

Classification: 423/556

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

(1) Note. Included under this definition are all forms of aluminum sulfate, as for example the hydroxy sulfate or the hydrosulfate, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

128, for processes of treating mixtures to obtain an aluminum sulfate, including the steps of (1) forming an insoluble

substance in a liquid, and (2) chemically forming a compound having the SO4[supscrpt]2-[end supscrpt] radical.