US PATENT SUBCLASS 423 / 9
.~.~.~.~ Organo-nitrogen solvent

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}
2  DF  .~ Radioactive metal (At. No. 84+ or radioactive isotope of another metal) {1}
3  DF  .~.~ Actinide series metal (At. No. 89+) {7}
8  DF  .~.~.~ Liquid-liquid extracting {2}
9.~.~.~.~ Organo-nitrogen solvent

DEFINITION

Classification: 423/9

(under subclass 8) Processes in which one of the immiscible liquids is an organic solvent containing nitrogen, e.g., amines, etc.

SEE OR SEARCH CLASS

260, Chemistry of Organic Compounds, appropriate subclasses for nitrogen containing organic solvents.