Inventor
NISHIHATA KEN
JP14 patents
⚠️ This page may combine multiple inventors who share the name “NISHIHATA KEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MEIJI SEIKA KAISHA
11 patentsUS4839350AJun 13, 1989
Cephalosporin compounds and the production thereof
MEIJI SEIKA KAISHA32 citations92
US4555404ANov 26, 1985
Sodium 7β-(2D-2-amino-2-carboxyethylthioacetamido)-7α-methoxy-3-(1-methyl-1H-tetrazol-5-yl)thiomethyl-3-cephem-4-carboxylate heptahydrate and process for its preparation
MEIJI SEIKA KAISHA8 citations73
US4918068AApr 17, 1990
Cephem compounds
MEIJI SEIKA KAISHA10 citations71
US4810702AMar 7, 1989
Antibacterial agent for mammal use comprising cephalosporin derivatives as an effective ingredient
MEIJI SEIKA KAISHA2 citations62
US4485235ANov 27, 1984
Process for preparing 7-α-methoxycephem compounds
MEIJI SEIKA KAISHA4 citations61
US4898858AFeb 6, 1990
Cephalosporin derivatives and antibiotics containing the same
MEIJI SEIKA KAISHA0 citations51
US4560750ADec 24, 1985
Cephem compounds and process for preparing the same
MEIJI SEIKA KAISHA1 citations51
US5596096AJan 21, 1997
Azetidinone derivatives and method for producing azetidinone and cephalosoporin derivatives
MEIJI SEIKA KAISHA0 citations47
US5405955AApr 11, 1995
Method for producing azetidinone and cephalosporin derivatives
MEIJI SEIKA KAISHA0 citations47
US4225706ASep 30, 1980
Polychalcogen ester of cephem compound, process for preparing the same and method for removing the protective group of the same
MEIJI SEIKA KAISHA0 citations40
US4159372AJun 26, 1979
Process for preparing cephalosporin esters in the presence of liquid sulfur dioxide
MEIJI SEIKA KAISHA0 citations40