Inventor
SHIBUYA CHISEI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “SHIBUYA CHISEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI CHEMICAL IND
13 patentsUS4258195AMar 24, 1981
Novel thiol esters and process for preparing cephalosporin compounds using same
ASAHI CHEMICAL IND11 citations73
US4616081AOct 7, 1986
Cephalosporin compounds
ASAHI CHEMICAL IND8 citations72
US4418061ANov 29, 1983
Secalonic acid derivatives and method for preparing thereof
ASAHI CHEMICAL IND6 citations72
US4351947ASep 28, 1982
Tetrazole derivative
ASAHI CHEMICAL IND6 citations72
US4172197AOct 23, 1979
Cephalosporin derivatives and process for preparing the same
ASAHI CHEMICAL IND7 citations69
US4556651ADec 3, 1985
Secalonic acid derivatives as antitumor agents
ASAHI CHEMICAL IND3 citations61
US4327211AApr 27, 1982
Method for preparation of cephalosporin compounds
ASAHI CHEMICAL IND6 citations61
US4229573AOct 21, 1980
7α-Methoxycephalosporin derivatives
ASAHI CHEMICAL IND3 citations61
US4463179AJul 31, 1984
1H-1,2,3-triazol-5-ylthio ester of N-carbobenzyloxy-p-hydroxyphenylglycine
ASAHI CHEMICAL IND3 citations60
US4456754AJun 26, 1984
Process for the preparation of cephalosporin derivatives using thioesters
ASAHI CHEMICAL IND4 citations60
US4245107AJan 13, 1981
Cephalosporin derivatives and process for preparing the same
ASAHI CHEMICAL IND2 citations58
US4417047ANov 22, 1983
Novel tetrazole-5-thiol ester and process for preparing cefamandole using same
ASAHI CHEMICAL IND0 citations51
US4454323AJun 12, 1984
1-Methyltetrazol-5-ylthio ester of cyanomethylthioacetic acid
ASAHI CHEMICAL IND0 citations49