US PATENT SUBCLASS 514 / 205
.~.~.~.~.~ The additional hetero ring is part of 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}
200  DF  .~.~ 1-thia-5-aza-bicyclo (4.2.0) octane ring containing (including dehydrogenated) (e.g., cephalosporins, etc.) {4}
202  DF  .~.~.~ Additional hetero ring {2}
204  DF  .~.~.~.~ 3-position substituent contains sulfur {3}
205.~.~.~.~.~ The additional hetero ring is part of a polycyclo ring system

DEFINITION

Classification: 514/205

The additional hetero ring is part of a polycyclo ring system:

(under subclass 204) Subject matter wherein the additional hetero ring is part of a polycyclo ring system.