Inventor
ISAKA ICHIRO
8 patents
Patents
8 patentsUS3939150AFeb 17, 1976
Penicillin derivatives
YAMANOUCHI PHARMA CO LTD20 citations78
US3953428AApr 27, 1976
Ampicillin derivatives substituted by heterocyclic acyl group
YAMANOUCHI PHARMA CO LTD17 citations76
US4068074AJan 10, 1978
Cephalosporin derivatives having at the 3-position of the cephem ring a heterocyclic thiomethyl group with a carboxy or sulfo group and at the 7-position of the cephem ring an α-heterocylic acylaminophenyl-acetamide group
YAMANOUCHI PHARMA CO LTD12 citations72
US3951954AApr 20, 1976
Novel oxofuryl ester derivatives of penicillin and cephalosporin
YAMANOUCHI PHARMA CO LTD6 citations71
US4036834AJul 19, 1977
Derivatives of 7-(α-hydroxy-substituted pyridyl carboxamido-α phΔ3 -cephem-4-carboxylic acid
YAMANOUCHI PHARMA CO LTD2 citations62
US4051126ASep 27, 1977
Process for the preparation of 6-alkoxy-substituted penicillins
YAMANOUCHI PHARMA CO LTD4 citations60
US3935198AJan 27, 1976
Process for the preparation of the cephalosporanic acid derivative
YAMANOUCHI PHARMA CO LTD3 citations60
US4311842AJan 19, 1982
Cephalosporin compounds
YAMANOUCHI PHARMA CO LTD0 citations50