US PATENT SUBCLASS 528 / 78
.~.~.~ Ether or thioether contains at least one nitrogen atom other than as a C NH, C=NH, or C-N(H)-H

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}
44  DF  .~ FROM REACTANT HAVING AT LEAST ONE -N=C=X GROUP (WHEREIN X IS A CHALCOGEN ATOM) AS WELL AS PRECURSORS THEREOF, E.G., BLOCKED ISOCYANATE, ETC. {17}
76  DF  .~.~ With ether or thioether compound containing at least two -C-X-C- groups {3}
78.~.~.~ Ether or thioether contains at least one nitrogen atom other than as a C NH, C=NH, or C-N(H)-H

DEFINITION

Classification: 528/78

(under subclass 76) Subject matter wherein the or reactant contains at least one nitrogen atom which is other than C-NH, C-NH2, or C=NH group.

(1) Note. This subclass includes tertiary amines.