US PATENT SUBCLASS 514 / 201
.~.~.~ 7,7-di-substituted


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}
201.~.~.~ 7,7-di-substituted


DEFINITION

Classification: 514/201

7,7-di-substituted:

(under subclass 200) Subject matter wherein the bicyclo octane ring system contains two substituents other than hydrogen in 7-position.