US PATENT SUBCLASS 524 / 717
.~.~.~.~ Heterocyclic structure other than per se N-alkyl pyrrolidone

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}
700  DF  .~.~ Preparation of intentional or desired composition by formation of a solid polymer (SP) or SICP in presence of a designated nonreactant material (DNRM) other than solely water, hydrocarbon, silicon dioxide, glass, titanium dioxide or elemental carbon, composition thereof; or process of treating or composition thereof {23}
714  DF  .~.~.~ N-containing organic compound excluding unsubstituted ammonium as sole nitrogen in DNRM {10}
717.~.~.~.~ Heterocyclic structure other than per se N-alkyl pyrrolidone {1}
718  DF  .~.~.~.~.~> Hetero nitrogen {2}

DEFINITION

Classification: 524/717

Heterocyclic structure other than per se N-alkyl pyrrolidone:

(under subclass 714) Subject matter wherein the organic compound containing nitrogen has at least one heterocyclic structure other than N-alkyl pyrrolidone.

(1) Note. See the Class 520 Glossary for the definition of "heterocyclic".

SEE OR SEARCH THIS CLASS, SUBCLASS:

726, for N-alkyl pyrrolidone, per se, as DNRM.