US PATENT SUBCLASS 252 / 505
.~.~ With radioactive material

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

500  DF  ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS {6}
502  DF  .~ Elemental carbon containing {5}
505.~.~ With radioactive material

DEFINITION

Classification: 252/505

(under subclass 502) Compositions which contain a radio-active material in addition to the elemental carbon.

(1) Note. Compounds of radium, uranium and thorium, for example, are included in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

301.1, for miscellaneous compositions containing radio-active materials.

517, for other conductive or emissive compositions which contain a radio-active material.

SEE OR SEARCH CLASS

427, Coating Processes, 5, for coating processes, per se, wherein the base or coating is radioactive.