US PATENT SUBCLASS 423 / 3
.~.~ Actinide series metal (At. No. 89+)

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.~.~ Actinide series metal (At. No. 89+) {7}
4  DF  .~.~.~> Removing cladding or coating from fuel element
5  DF  .~.~.~> Fusing
6  DF  .~.~.~> Ion exchanging or sorbing {1}
8  DF  .~.~.~> Liquid-liquid extracting {2}
11  DF  .~.~.~> Forming insoluble substance in liquid {5}
19  DF  .~.~.~> Volatizing
20  DF  .~.~.~> Acid leaching

DEFINITION

Classification: 423/3

(under subclass 2) Processes in which the radio-active compound comprises a metal of the actinide series, i.e., one having an atomic number of 89 or greater.

SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use

Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, for processes in general of obtaining pure metal values in a metallurgical process and particularly

84.1, for pyrometallurgical processes for obtaining actinide and trans-actinide series metals. Production of the metal, e.g., uranium, plutonium, etc., compounds or concentrates as products even if disclosed for metallurgical purposes are classified in this and indented subclasses.

204, Chemistry: Electrical and Wave Energy, appropriate subclasses for electrical or wave energy preparation, separation, or recovery of actinide series products. Also, see section III of the Class 204 definition for the general class line between Class 204 and Class 423.

205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, 43+, for electrolytic processes involving an actinide series element or compound, including preparation, separation, or recovery of actinide series products.

376, Induced Nuclear Reactions: Processes, Systems, and Elements, for processes of producing a reaction product by an impact or bombardment of a nucleus and in

189, 195, 198, and 201 for such processes followed by product treatment for recovery or separation.

420, Alloys or Metallic Compositions,

1+, for alloys, metallic compositions or intermetallic compounds containing an actinide or transactinide series metal.