US PATENT SUBCLASS 423 / 87
.~ Group VA metal or arsenic (Sb, Bi, or As)

Current as of: June, 1999
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423 /   HD   CHEMISTRY OF INORGANIC COMPOUNDS

1  DF  TREATING MIXTURE TO OBTAIN METAL CONTAINING COMPOUND {15}
87.~ Group VA metal or arsenic (Sb, Bi, or As) {1}
88  DF  .~.~> Volatizing

DEFINITION

Classification: 423/87

(under subclass 1) Processes in which the compound comprises antimony, bismuth or arsenic.

(1) Note. For purposes of this Class 423, arsenic is considered to be a metal.

SEE OR SEARCH CLASS

588, Hazardous or Toxic Waste Destruction or Containment, appropriate subclasses for the destruction or containment of hazardous or toxic waste containing Sb, Bi, or As.