US PATENT SUBCLASS 528 / 263
.~.~.~.~.~ Non- >N-C(=X)-N< nitrogen reactant is an organic compound containing two or more amino groups

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}
259  DF  .~.~ With >N-C(=X)-N< -containing reactant wherein X is a chalcogen atom {3}
261  DF  .~.~.~ At least one reactant is a nonaldehyde or nonaldehyde derivative, non- >N C(=X)-N< -containing reactant {1}
262  DF  .~.~.~.~ Nonaldehyde reactant, non->N-C(=X)-N< reactant contains a nitrogen atom {1}
263.~.~.~.~.~ Non- >N-C(=X)-N< nitrogen reactant is an organic compound containing two or more amino groups

DEFINITION

Classification: 528/263

(under subclass 262) Subject matter wherein the non- reactant (X is O, S, Se, or Te or nonaldehyde or derivative reactant is an organic compound containing two or more amino groups.

(1) Note. An amine proper for this subclass requires (a) at

least two distinct nitrogen atoms bonded to at least two distinct carbon atoms, or (b) the presence of at least two nitrogen atoms bonded to the same carbon atom. Each nitrogen atom, single or double bonded, set forth above and consistent with the definitiom referred to in the Search Note below is the nitrogen of an amine.

SEE OR SEARCH CLASS

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