Inventor
OKANO SHIGERU
15 patents
⚠️ This page may combine multiple inventors who share the name “OKANO SHIGERU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO CHEMICAL CO
10 patentsUS3992371ANov 16, 1976
Penicillins substituted with heterocyclic and substituted phenyl groups
SUMITOMO CHEMICAL CO33 citations92
US3954733AMay 4, 1976
Naphthyridine-3-carboxamido-benzylpenicillins and salts thereof
SUMITOMO CHEMICAL CO33 citations92
US3932400AJan 13, 1976
Thiazole derivatives
SUMITOMO CHEMICAL CO45 citations90
US4008220AFeb 15, 1977
Penicillins
SUMITOMO CHEMICAL CO9 citations73
US4014895AMar 29, 1977
Method for synthesis of optically active thiolactones
SUMITOMO CHEMICAL CO11 citations71
US3951955AApr 20, 1976
Penicillins substituted with heterocyclic groups
SUMITOMO CHEMICAL CO11 citations69
US3951998AApr 20, 1976
Benzothiazole derivatives
SUMITOMO CHEMICAL CO2 citations60
US3931219AJan 6, 1976
Process for preparing hexahydrothieno[3,4-d]imidazole-2,4-diones
SUMITOMO CHEMICAL CO4 citations60
US3998817ADec 21, 1976
Process for producing cephalosporanic acid derivatives
SUMITOMO CHEMICAL CO5 citations59
US4003887AJan 18, 1977
Novel penicillins and their preparation
SUMITOMO CHEMICAL CO1 citations51