US PATENT SUBCLASS 514 / 337
.~.~.~.~ The additional hetero ring is one of the cyclos in a polycyclo ring system

Current as of: June, 1999
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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
183  DF  .~ Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., O,S,Se or Te) or nitrogen as the only ring hetero atoms DOAI {16}
277  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbon atoms {11}
336  DF  .~.~.~ Additional hetero ring containing {2}
337.~.~.~.~ The additional hetero ring is one of the cyclos in a polycyclo ring system {2}
338  DF  .~.~.~.~.~> Plural hetero atoms in the polycyclo ring system
339  DF  .~.~.~.~.~> Ring nitrogen in the polycyclo ring system

DEFINITION

Classification: 514/337

The additional hetero ring is one of the cyclos in a polycyclo ring system:

(under subclass 336) Subject matter wherein the additional hetero ring is one of the cyclos in a polycyclo ring system.