Inventor
KOYASU YOSHIRO
JP4 patents
Patents
4 patentsUS5545267AAug 13, 1996
Steel product for induction-hardened shaft component and shaft component using the same
NIPPON STEEL CORP19 citations90
US5660648AAug 26, 1997
Microalloyed steel for hot forging free of subsequent quenching and tempering, process for producing hot forging, and a hot forging
NIPPON STEEL CORP18 citations82
US5252153AOct 12, 1993
Process for producing steel bar wire rod for cold working
NIPPON STEEL CORP10 citations72
US4806178AFeb 21, 1989
Non-heat refined steel bar having improved toughness
NIPPON STEEL CORP3 citations61