US PATENT SUBCLASS 525 / 247
.~.~.~.~.~.~ Contains nontransition metal atom

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
55  DF  .~.~ At least one solid polymer derived from ethylenic reactants only {25}
242  DF  .~.~.~ Polymer derived from ethylenic reactants only mixed with ethylenic reactant {21}
244  DF  .~.~.~.~ Contacting a solid polymer derived from ethylenic reactants only with an ethylenic reactant in the presence of a specified material {14}
245  DF  .~.~.~.~.~ Specified material contains transition metal atom {2}
247.~.~.~.~.~.~ Contains nontransition metal atom

DEFINITION

Classification: 525/247

Contains nontransition metal atom:

(under subclass 245) Subject matter wherein a transition metal atom is in contact with a nontransition metal atom at some time during the contacting process.

(1) Note. The term nontransition metal is intended to include all metals other than the transition metals.

(2) Note. The transition metals are the elements of atomic numbers 21-29, 39-47, 57-79, and 89 and higher; Zm, Ch, and Hg are not included.

(3) Note. The nontransition metalatom may be in the same compound as the transition metal atom or in a different compound, or it may exist in elemental form.