US PATENT SUBCLASS 524 / 237
.~.~.~.~.~.~.~ Carbon bonded to three N atoms, -C=NH, or C=N-C group

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  DF  .~.~.~.~.~.~ Trivalent or tetravalent nitrogen atom other than unsubstituted ammonium {6}
237.~.~.~.~.~.~.~ Carbon bonded to three N atoms, -C=NH, or C=N-C group

DEFINITION

Classification: 524/237

C(N)3, -C=NH, or C=N-C group:

(under subclass 236) Subject matter wherein the nitrogen compound contains at least one carbon atom bound directly to three nitrogen atoms; or contains at least one NH or NC group wherein the nitrogen atom of said group is bound to a carbon atom through a double bond.