US PATENT SUBCLASS 514 / 381
.~.~.~ Tetrazoles (including hydrogenated)

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}
359  DF  .~.~ Five-membered hetero ring containing at least one nitrogen ring atom (e.g., 1,2,3-triazoles, etc.) {11}
381.~.~.~ Tetrazoles (including hydrogenated) {1}
382  DF  .~.~.~.~> Additional chalcogen containing hetero ring

DEFINITION

Classification: 514/381

Tetrazoles (including hydrogenated):

(under subclass 359) Subject matter wherein the five-membered hetero ring consists of four ring nitrogens and one ring carbon and may have double bond between ring members.