US PATENT SUBCLASS 524 / 236
.~.~.~.~.~.~ Trivalent or tetravalent nitrogen atom other than unsubstituted ammonium

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
*  DD  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF (Class 523, subclass 1) {17}
1  DF  .~.~ Adding a NRM to a preformed solid polymer or preformed specified intermediate condensation product, composition thereof; or process of treating or composition thereof {31}
80  DF  .~.~.~ DNRM which is other than silicon dioxide, glass, titanium dioxide, water, halohydrocarbon, hydrocarbon, or elemental carbon {4}
81  DF  .~.~.~.~ Organic DNRM {21}
186  DF  .~.~.~.~.~ Organo nitrogen compound other than unsubstituted ammonium salt as sole nitrogen atom DNRM {12}
236.~.~.~.~.~.~ Trivalent or tetravalent nitrogen atom other than unsubstituted ammonium {6}
237  DF  .~.~.~.~.~.~.~> Carbon bonded to three N atoms, -C=NH, or C=N-C group
238  DF  .~.~.~.~.~.~.~> (C=X)X group wherein X is chalcogen {2}
241  DF  .~.~.~.~.~.~.~> C=X group where X is chalcogen {1}
243  DF  .~.~.~.~.~.~.~> C-O-C group {2}
247  DF  .~.~.~.~.~.~.~> C-OH group {2}
251  DF  .~.~.~.~.~.~.~> N, C, and H atoms only {2}

DEFINITION

Classification: 524/236

Trivalent or tetravalent nitrogen atom other than unsubstituted ammonium:

(under subclass 186) Subject matter wherein the nitrogen compound contains at least one nitrogen atom having either a valency of three or four and is other than an unsubstituted ammonium (NH4+) salt, e.g., dimethyl glyoxime, pyridine N-oxide, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

284+, for an unsubstituted ammonium salt of a carboxylic acid as a designated nonreactant material.