Inventor
OKA YOSHIKAZU
JP13 patents
⚠️ This page may combine multiple inventors who share the name “OKA YOSHIKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TAKEDA CHEMICAL INDUSTRIES LTD
9 patentsUS4822818AApr 18, 1989
Bicycle compounds, their production and use
TAKEDA CHEMICAL INDUSTRIES LTD13 citations82
US4474692AOct 2, 1984
L-Alanyl-N-(indan-2-yl)glycine, its esters and salts thereof
TAKEDA CHEMICAL INDUSTRIES LTD23 citations82
US4066648AJan 3, 1978
Isochroman derivatives
TAKEDA CHEMICAL INDUSTRIES LTD22 citations81
US4148897AApr 10, 1979
1,2-Dihydronaphthalene derivatives and pharmaceutical composition
TAKEDA CHEMICAL INDUSTRIES LTD8 citations74
US4521607AJun 4, 1985
Chromanyl glycines
TAKEDA CHEMICAL INDUSTRIES LTD14 citations73
US4472383ASep 18, 1984
Peptide derivatives, their production and use
TAKEDA CHEMICAL INDUSTRIES LTD7 citations73
US5098892AMar 24, 1992
Process for preparation of bicyclic compounds
TAKEDA CHEMICAL INDUSTRIES LTD2 citations62
US4199582AApr 22, 1980
Piperazine containing dihydronaphthalene derivatives and compositions
TAKEDA CHEMICAL INDUSTRIES LTD4 citations62
US4035363AJul 12, 1977
1,3-benzoxazine derivatives
TAKEDA CHEMICAL INDUSTRIES LTD3 citations51