US PATENT SUBCLASS 75 / 400
.~.~ Free metal production from sea nodules

Current as of: June, 1999
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75 /   HD   SPECIALIZED METALLURGICAL PROCESSES, COMPOSITIONS FOR USE THEREIN, CONSOLIDATED METAL POWDER COMPOSITIONS, AND LOOSE METAL PARTICULATE MIXTURES

330  DF  PROCESSES {9}
392  DF  .~ Producing or treating free metal {10}
400.~.~ Free metal production from sea nodules

DEFINITION

Classification: 75/400

Free metal production from sea nodules:

(under subclass 392) Process wherein elemental metal is produced from metalliferous lumps found on the bed of the sea. These lumps are usually high in manganese.

SEE OR SEARCH CLASS

423, Chemistry of Inorganic Compounds,

49+, for a process of obtaining a manganese compound or manganese values from sea nodules without reduction to elemental metal.