US PATENT SUBCLASS 549 / 467
.~.~.~.~.~.~ Nitrogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding

Current as of: June, 1999
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549 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {2}
200  DF  .~.~ Oxygen containing hetero ring (e.g., dioxirane, etc.) {16}
429  DF  .~.~.~ The hetero ring is five-membered {14}
456  DF  .~.~.~.~ Polycyclo ring system having the hetero ring as one of the cyclos {3}
462  DF  .~.~.~.~.~ Bicyclo ring system having the hetero ring as one of the cyclos {9}
467.~.~.~.~.~.~ Nitrogen attached directly or indirectly to the hetero ring by acyclic nonionic bonding

DEFINITION

Classification: 549/467

(under subclass 462) Compounds wherein nitrogen is attached directly to the hetero ring or is attached indirectly to the hetero ring by acyclic nonionic bonding.

(1) Note. Examples of compounds provided for herein are: [figure] [figure]