US PATENT SUBCLASS 528 / 411
.~.~.~.~.~ Material contains a Group IVB metal atom (Ti, Zr, Hf)

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {23}
403  DF  .~ FROM HETEROCYCLIC REACTANT CONTAINING AS RING ATOMS OXYGEN, SELENIUM OR TELLURIUM, E.G., EPOXY, ETC. {7}
408  DF  .~.~ Polymerizing in the presence of a specified material other than a reactant {1}
409  DF  .~.~.~ Material contains a metal atom {4}
410  DF  .~.~.~.~ Material contains a transition metal atom {2}
411.~.~.~.~.~ Material contains a Group IVB metal atom (Ti, Zr, Hf)

DEFINITION

Classification: 528/411

(under subclass 410) Subject matter wherein the transition metal is a Group IVB metal atom (Ti, Zr, Hf).