US PATENT SUBCLASS 528 / 233
.~.~.~ Material contains a 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}
230  DF  .~ FROM ALDEHYDE OR DERIVATIVE THEREOF AS REACTANT {12}
232  DF  .~.~ Polymerizing in the presence of a specified material other than a reactant {4}
233.~.~.~ Material contains a metal atom {4}
234  DF  .~.~.~.~> Material contains a transition metal atom {1}
236  DF  .~.~.~.~> Material contains a heavy metal atom {1}
238  DF  .~.~.~.~> Material contains an aluminum atom
239  DF  .~.~.~.~> Material contains a Group IA metal atom (Li, Na, K, Rb, Cs, Fr)

DEFINITION

Classification: 528/233

(under subclass 232) 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 the definition of "metals".