US PATENT SUBCLASS 423 / 137
.~.~ Utilizing carbon as reducing agent

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}
111  DF  .~ Group IIIA metal or beryllium (Al, Ga, In, Tl, or Be) {9}
137.~.~ Utilizing carbon as reducing agent

DEFINITION

Classification: 423/137

(under subclass 111) Processes in which include the step of using elemental carbon as a reducing agent.