US PATENT SUBCLASS 540 / 584
.~.~.~.~.~.~ Chalcogen or nitrogen attached directly to ring nitrogen of the bicyclo ring system by 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}
581  DF  .~.~.~.~ Two of the cyclos share at least three ring members or a ring carbon is shared by three of the cyclos (e.g., bridged, peri-fused, etc.) {1}
582  DF  .~.~.~.~.~ Bicyclo ring system which contains the hetero ring as one of the cyclos (e.g., 3-azabicyclo-(3.2.2)nonanes, etc.) {3}
584.~.~.~.~.~.~ Chalcogen or nitrogen attached directly to ring nitrogen of the bicyclo ring system by nonionic bonding

DEFINITION

Classification: 540/584

(under subclass 582) Compounds wherein nitrogen of chalcogen (i.e., oxygen, sulfur, selenium or tellurium) is attached directly to the ring nitrogen of the bicyclo ring system by nonionic bonding.

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