Inventor
ERNEST IVAN
12 patents
Patents
12 patentsUS4614614ASep 30, 1986
Process for the manufacture of optically active azetidinones
CIBA GEIGY CORP50 citations92
US4331676AMay 25, 1982
Thia-aza compounds with a β-lactam ring
CIBA GEIGY CORP14 citations81
US4952690AAug 28, 1990
6-substituted thia-aza compounds
CIBA GEIGY CORP12 citations73
US4692442ASep 8, 1987
6-substituted penem compounds
CIBA GEIGY CORP14 citations73
US4524028AJun 18, 1985
Monocyclic intermediates for thia-aza compounds with a β-lactam ring
CIBA GEIGY CORP5 citations73
US4500457AFeb 19, 1985
Process for preparing thia-aza compounds with a beta-lactam ring
CIBA GEIGY CORP18 citations73
US4649215AMar 10, 1987
Aliphatic thioethers
CIBA GEIGY CORP10 citations72
US4070477AJan 24, 1978
2-Penem compounds
CIBA GEIGY CORP15 citations72
US4518533AMay 21, 1985
Azetidinone-4-disulfides as intermediates for thia-aza compounds with a beta-lactam ring
CIBA GEIGY CORP2 citations62
US4515717AMay 7, 1985
Thia-aza compounds with a β-lactam ring
CIBA GEIGY CORP2 citations62
US4447360AMay 8, 1984
Intermediates for thia-aza compounds with a β-lactam ring
CIBA GEIGY CORP1 citations62
US4364865ADec 21, 1982
Bicyclic unsaturated thia-aza compounds and 4-acylthio azetidinone intermediates
CIBA GEIGY CORP3 citations62