Inventor
ISHIZAWA YOSHIICHI
JP4 patents
Patents
4 patentsUS5496421AMar 5, 1996
High-strength martensitic stainless steel and method for making the same
NIPPON KOKAN KK40 citations89
US5653899AAug 5, 1997
Method of making a steel pipe by electric resistance heating of opposing edges of a sheet prior to laser welding
NIPPON KOKAN KK11 citations68
US5431748AJul 11, 1995
Electric-resistance-welded steel pipe with high strength
NIPPON KOKAN KK3 citations58
US5286309AFeb 15, 1994
Electric-resistance-welded steel pipe with high strength
NIPPON KOKAN KK3 citations58