US PATENT SUBCLASS 525 / 269
.~.~.~.~.~.~ Transition metal is other than Group IVB, VB, or VIB 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}
267  DF  .~.~.~.~ Including step of preparing a polymer in the presence of a specified material and in the absence of a preformed polymer derived from ethylenic reactant only {3}
268  DF  .~.~.~.~.~ Specified material contains a transition metal atom {2}
269.~.~.~.~.~.~ Transition metal is other than Group IVB, VB, or VIB metal atom

DEFINITION

Classification: 525/269

Transition metal is other than group IVB, VB, or VIB metal atom:

(under subclass 268) Subject matter wherein the transition metal atom is other than from Groups IVB, VB, or VIB.

(1) Note. Excluded from this subclass are elements Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, and W.