Designated organic active ingredient containing (doai) > 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 > 1-thia-5-aza-bicyclo (4.2.0) octane ring containing (including dehydrogenated) (e.g., cephalosporins, etc.) > 7,7-di-substituted > Patents

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Patent Number	Title Of Patent	Date Issued
4147693	.beta.Lactam antibiotics and process for their use	Apr. 3, 1979
4137314	7-Dithioacetamido cephalosporins and pharmaceutical compositions and methods employing them having antibacterial activity	Jan. 30, 1979
4125611	3-Heterocyclic thiomethyl 7-methoxy-7 substituted acetamido cephalosporins	Nov. 14, 1978
4118491	7-Acyl-3-(sulfaminoalkyl substituted tetrazolylthiomethyl)cephalosporins, antibacterial compositions containing them and methods of treating bacterial infections with them	Oct. 3, 1978
4118490	7-Acyl-3-(sulfonic acid and sulfamoyl substituted tetrazolyl thiomethyl)cephalosporins and pharmaceutical compositions containing them	Oct. 3, 1978
4101657	Cephamycins as antibacterial agents	Jul. 18, 1978
4101658	Antibacterial hydrazono cephalosporins	Jul. 18, 1978
4100275	Compositions having antibiotic properties	Jul. 11, 1978
4098888	Thiazolylacetamido cephalosporin type compounds	Jul. 4, 1978
4066762	Derivatives of 7-(2-substituted-2-hydroxyiminoacetamido)-3-(1-substituted tetrazol-5-yl thiomethyl-3-cephem-4-carboxylic acid	Jan. 3, 1978
4058609	7-Dithioacetamido cephalosporins	Nov. 15, 1977
4048311	7-Acyl-3-(sulfonic acid and sulfamoyl substituted tetrazolyl thiomethyl)cephalosporins	Sep. 13, 1977
3973015	Antibiotic A16884	Aug. 3, 1976