US PATENT SUBCLASS 523 / 375
.~.~ Radioactive or Group VIIIA atom containing NRM

Current as of: June, 1999
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523 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
375.~.~ Radioactive or Group VIIIA atom containing NRM

DEFINITION

Classification: 523/375

Radioactive or Group VIIIA atom containing NRM:

(under subclass 1) Subject matter wherein a radioactive element or a radioactive compound or wherein an inert or noble gas or a compound thereof NRM is in admixture with a solid polymer or specified intermediate condensation product.

(1) Note. Radioactive materials are those which exhibit spontaneous nuclear disintegration with emission of radioactive particles and which comprise (a) an element or compound which contains an element which has an atomic number of at least 84, or (b) the compound or an element which has been treated to render an isotope thereof radioactive.

(2) Note. An inert or noble gas or compound thereof contains at least one element whose atom number is 2, 10, 18, 36, 54, or 86, i.e., He, Ne, Ar, Kr, Xe, Rn.