US PATENT SUBCLASS 540 / 572
.~.~.~.~.~.~.~.~ Chalcogen or nitrogen attached 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}
553  DF  .~.~.~ The hetero ring contains plural nitrogens (e.g., 1,3-diazepines, etc.) {3}
555  DF  .~.~.~.~ Polycyclo ring system which contains the hetero ring as one of the cyclos {3}
567  DF  .~.~.~.~.~ Bicyclo ring system which contains the hetero ring as one of the cyclos {2}
569  DF  .~.~.~.~.~.~ 1,4-benzodiazepines (including hydrogenated) {4}
571  DF  .~.~.~.~.~.~.~ Nitrogen bonded directly to ring carbon of the hetero ring {1}
572.~.~.~.~.~.~.~.~ Chalcogen or nitrogen attached indirectly to ring carbon of the hetero ring by acyclic nonionic bonding

DEFINITION

Classification: 540/572

(under subclass 571) Compounds wherein nitrogen or chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached indirectly to ring carbon of the hetero ring by acyclic nonionic bonding.

(1) Note. An example of a compound provided for herein is: [figure]