US PATENT SUBCLASS 540 / 590
.~.~.~.~.~.~.~ Nitrogen attached directly or indirectly to ring carbon of the hetero ring by acyclic nonionic bonding


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



540 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS {6}
484  DF  .~.~ The hetero ring contains seven members including nitrogen and carbon {14}
576  DF  .~.~.~ Polycyclo ring system which contains the hetero ring as one of the cyclos {4}
586  DF  .~.~.~.~ Tricyclo ring system which contains the hetero ring as one of the cyclos {1}
587  DF  .~.~.~.~.~ The hetero ring shares ring members with each of two benzene rings in the tricyclo ring system (e.g., morphanthridines, etc.) {1}
588  DF  .~.~.~.~.~.~ The nitrogen of the hetero ring is bonded directly to each of the two benzene rings (e.g., iminodibenzyl, etc.) {4}
590.~.~.~.~.~.~.~ Nitrogen attached directly or indirectly to ring carbon of the hetero ring by acyclic nonionic bonding


DEFINITION

Classification: 540/590

(under subclass 588) Compounds wherein nitrogen is attached directly or indirectly to carbon of the hetero ring by acyclic nonionic bonding.

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