US PATENT SUBCLASS 514 / 389
.~.~.~.~.~ Divalent chalcogen or acyclic nitrogen double bonded directly at both 2- and 4- positions, or tautomeric equivalent (e.g., hydantoin, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
385  DF  .~.~.~ 1,3-diazoles {4}
386  DF  .~.~.~.~ Divalent chalcogen or acyclic nitrogen double bonded directly to ring carbon of the diazole ring, or tautomeric equivalent {3}
389.~.~.~.~.~ Divalent chalcogen or acyclic nitrogen double bonded directly at both 2- and 4- positions, or tautomeric equivalent (e.g., hydantoin, etc.) {2}
390  DF  .~.~.~.~.~.~> Chalcogen or nitrogen bonded directly at 1-, 3-, or 5-position by nonionic bonding
391  DF  .~.~.~.~.~.~> Benzene ring bonded directly to the diazole ring by nonionic bonding

DEFINITION

Classification: 514/389

Divalent chalcogen or acyclic nitrogen double bonded directly at both 2- and 4-positions, or tautomeric equivalent (e.g., hydantoin, etc.):

(under subclass 386) Subject matter wherein the ring carbons at the 2- and 4-positions of the 1,3-diazole ring are each bonded directly by a double bond to divalent chalcogen or acyclic nitrogen, or to a group which may tautomerize thereto (e.g., hydroxyl, sulfhydryl, acyclic amino, etc.).