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Class Information
Number: 548/136
Name: Organic compounds -- part of the class 532-570 series > Organic compounds (class 532, subclass 1) > Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) or nitrogen as the only ring hetero atoms (class 540, subclass 1) > Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) > The five-membered hetero ring consists of chalcogen, plural nitrogens, and carbon > 1,3,4-thiadiazoles (including hydrogenated)
Description: Compounds in which the five-membered hetero ring has sulfur in the 1-position, nitrogens in the 3- and 4-positions, and carbons in the remaining two positions.

Sub-classes under this class:

Class Number Class Name Patents
548/142 Chalcogen bonded directly to the 2- and 5- positions of the thiadiazole ring 167
548/137 Diazole ring attached directly to the thiadiazole ring by nonionic bonding 65
548/138 Nitrogen attached directly to the thiadiazole ring by nonionic bonding 197

Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
3947263 Plant growth regulants Mar. 30, 1976
3941804 1-Heteroarylsulphonyl-2-imino-imidazolidines Mar. 2, 1976
3936419 Multichromophoric ultraviolet stabilizers and their use in organic compositions Feb. 3, 1976
3935209 5(6)-Benzene ring substituted benzimidazole-2-carbamate derivatives having anthelmintic activity Jan. 27, 1976
3935219 Antimicrobial dihalonitromethylisoxazoles Jan. 27, 1976

1 2 3 4 5 6 7 8 9 10 11 12

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