US PATENT SUBCLASS 528 / 232
.~.~ Polymerizing in the presence of a specified material other than a reactant

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.~.~ Polymerizing in the presence of a specified material other than a reactant {4}
233  DF  .~.~.~> Material contains a metal atom {4}
240  DF  .~.~.~> Material contains a boron atom {1}
242  DF  .~.~.~> Material contains a phosphorus or sulfur atom
243  DF  .~.~.~> Material contains nitrogen as part of a nitrogen-containing compound

DEFINITION

Classification: 528/232

(under subclass 230) Subject matter wherein an aldehyde or derivative is polymerized in the presence of a special material.

SEE OR SEARCH CLASS

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