Inventor
KIYONAGA KINGO
4 patents
Patents
4 patentsUS4116684ASep 26, 1978
High speed tool steel having high toughness
HITACHI METALS LTD29 citations80
US4032302AJun 28, 1977
Carbide enriched high speed tool steel
HITACHI METALS LTD22 citations80
US4058650ANov 15, 1977
Back material of metal band saw high in fatigue strength
HITACHI METALS LTD22 citations72
US4218243AAug 19, 1980
Fully martensitic steel for a metal mold for molding glass and the metal mold
HITACHI METALS LTD7 citations71