US PATENT SUBCLASS 528 / 55
.~.~.~ Material contains at least one metal atom

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}
44  DF  .~ FROM REACTANT HAVING AT LEAST ONE -N=C=X GROUP (WHEREIN X IS A CHALCOGEN ATOM) AS WELL AS PRECURSORS THEREOF, E.G., BLOCKED ISOCYANATE, ETC. {17}
48  DF  .~.~ Process of polymerizing in the presence of a specified material other than reactant {5}
55.~.~.~ Material contains at least one metal atom {3}
56  DF  .~.~.~.~> Material contains a transition metal atom
57  DF  .~.~.~.~> Material contains at least one group IA or group IIA metal atom
58  DF  .~.~.~.~> Material contains at least one atom of tin

DEFINITION

Classification: 528/55

(under subclass 48) Subject matter wherein the specified material contains at least one metal atom.

SEE OR SEARCH CLASS

520, Synthetic Resins or Natural Rubbers, see the Glossary for a definition of the term "metals".