Inventor
SPRY DOUGLAS O
20 patents
Patents
20 patentsUS5142039AAug 25, 1992
β-lactam antibiotics
LILLY CO ELI8 citations73
US4983732AJan 8, 1991
Method of deprotection of 3-amino azetidinones
LILLY CO ELI7 citations73
US4115643ASep 19, 1978
Process for 3-chloro cephalosporins
LILLY CO ELI15 citations73
US4031084AJun 21, 1977
Process for cephalosporin antibiotic intermediates
LILLY CO ELI10 citations73
US4001226AJan 4, 1977
3-(substituted)carbonylamino cephem derivatives
LILLY CO ELI10 citations73
US5239068AAug 24, 1993
Bicyclic β-lactam antibiotics
LILLY CO ELI2 citations62
US4560749ADec 24, 1985
Cephem-3-imidates and 3-amidines
LILLY CO ELI3 citations62
US4533497AAug 6, 1985
N-ethylidene azetidinones
LILLY CO ELI2 citations62
US4521598AJun 4, 1985
3-Azidocephalosporins
LILLY CO ELI4 citations62
US4334063AJun 8, 1982
Cephalosporin vinyl halides
LILLY CO ELI4 citations62
US4299954ANov 10, 1981
Cephalosporin vinyl halides
LILLY CO ELI3 citations62
US4012380AMar 15, 1977
7-Acylamino-3-acyl-2(or 3)cephems
LILLY CO ELI5 citations62
US3953436AApr 27, 1976
3,4-Dicarboxycephalosporins and derivatives
LILLY CO ELI2 citations62
US3933806AJan 20, 1976
Cephalosporin michael adducts
LILLY CO ELI4 citations62
US5393882AFeb 28, 1995
Bicyclic β-lactam antibiotics
LILLY CO ELI0 citations51
US4604386AAug 5, 1986
3-(alkynylalkyloxy) cephalosporins
LILLY CO ELI1 citations51
US4334064AJun 8, 1982
Cephalosporin vinyl halides
LILLY CO ELI0 citations51
US4133808AJan 9, 1979
4-(Formylthio)azetidinones and ozonization process therefor
LILLY CO ELI1 citations51
US4048157ASep 13, 1977
4(Formylthio)-azetidin-2-ones and ozonization process therefor
LILLY CO ELI1 citations51
US4565655AJan 21, 1986
Diazabicyclononene antibacterials
LILLY CO ELI0 citations41