Inventor

YOKOKAWA TAKAO

4 patents

Patents

4 patents

US3992974ANov 23, 1976

Conical washer for a high tensile strength bolt

NIPPON STEEL CORP55 citations91

US4103815AAug 1, 1978

Gas pressure welding system

NIPPON STEEL CORP11 citations69

US4121748AOct 24, 1978

Gas pressure welding process

NIPPON STEEL CORP5 citations58

US4061494ADec 6, 1977

Free-cutting graphitic steel

NIPPON STEEL CORP4 citations55