Inventor
YAMAOKA MASAYOSHI
17 patents
⚠️ This page may combine multiple inventors who share the name “YAMAOKA MASAYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TAKEDA CHEMICAL INDUSTRIES LTD
16 patentsUS4080498AMar 21, 1978
7-Alpha-(2-aminothiazole)-acetamido-cephalosporins
TAKEDA CHEMICAL INDUSTRIES LTD26 citations81
US5563129AOct 8, 1996
Hydroquinone derivatives and intermediates for production thereof
TAKEDA CHEMICAL INDUSTRIES LTD10 citations72
US4427586AJan 24, 1984
2-Oxoazetidine derivatives and production thereof
TAKEDA CHEMICAL INDUSTRIES LTD9 citations72
US3984401AOct 5, 1976
Process for producing lactol-type cephalosporins
TAKEDA CHEMICAL INDUSTRIES LTD12 citations72
US4012379AMar 15, 1977
7-Acetoacetamidocephem compounds
TAKEDA CHEMICAL INDUSTRIES LTD9 citations71
US4725592AFeb 16, 1988
1-Acyloxyalkyl esters of cephalosporin
TAKEDA CHEMICAL INDUSTRIES LTD4 citations62
US4517361AMay 14, 1985
Cephalosporin derivatives
TAKEDA CHEMICAL INDUSTRIES LTD1 citations62
US4238608ADec 9, 1980
7-[2-(2-Aminothiazol-4-yl)-2-substituted thio-acetamido] cephalosporins
TAKEDA CHEMICAL INDUSTRIES LTD2 citations62
US4172891AOct 30, 1979
Cephalosporins
TAKEDA CHEMICAL INDUSTRIES LTD2 citations62
US4011214AMar 8, 1977
3-(morpholinoalkoxyiminomethyl)cephem compounds
TAKEDA CHEMICAL INDUSTRIES LTD3 citations62
US5436359AJul 25, 1995
Hydroquinone derivatives and intermediates for production thereof
TAKEDA CHEMICAL INDUSTRIES LTD4 citations61
US4239758ADec 16, 1980
Cephalosporins
TAKEDA CHEMICAL INDUSTRIES LTD0 citations52
US5534639AJul 9, 1996
Hydroquinone derivatives and intermediates for production thereof
TAKEDA CHEMICAL INDUSTRIES LTD0 citations51
US4593115AJun 3, 1986
Method for producing 1-iodoalkyl acylates
TAKEDA CHEMICAL INDUSTRIES LTD1 citations51
US4421912ADec 20, 1983
Cephalosporin derivatives
TAKEDA CHEMICAL INDUSTRIES LTD0 citations48
US4379924AApr 12, 1983
Cephalosporin derivatives
TAKEDA CHEMICAL INDUSTRIES LTD1 citations45