US PATENT SUBCLASS 423 / 554
.~.~.~ Alkaline earth metal containing (Mg, Ca, Sr, or Ba)

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}
554.~.~.~ Alkaline earth metal containing (Mg, Ca, Sr, or Ba) {1}
555  DF  .~.~.~.~> Calcium

DEFINITION

Classification: 423/554

(under subclass 544) Products or processes wherein the compound contains magnesium, calcium, strontium or barium.