US PATENT SUBCLASS 528 / 251
.~.~.~ Nonaldehyde or nonaldehyde derivative heterocyclic compound contains a sulfur atom as a ring member of the heterocyclic compound

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}
248  DF  .~.~ With heterocyclic reactant which is not an aldehyde or derivative {5}
251.~.~.~ Nonaldehyde or nonaldehyde derivative heterocyclic compound contains a sulfur atom as a ring member of the heterocyclic compound

DEFINITION

Classification: 528/251

(under subclass 248) Subject matter wherein the heterocyclic reactant which is not an aldehyde or a derivative of an aldehyde contains at least one sulfur atom as a ring member of a heterocyclic ring.

SEE OR SEARCH THIS CLASS, SUBCLASS:

255, for a polymer derived from a sulfur-containing triazine reactant and an aldehyde or aldehyde derivative.