Inventor
NAGAHASHI SHINICHI
JP4 patents
Patents
4 patentsUS4933024AJun 12, 1990
Method for manufacturing a high strength rail with good toughness
NIPPON KOKAN KK23 citations87
US4767475AAug 30, 1988
Wear resistant rails having capability of preventing propagation of unstable rupture
NIPPON KOKAN KK17 citations72
US4886558ADec 12, 1989
Method for heat-treating steel rail head
NIPPON KOKAN KK11 citations68
US6361625B2Mar 26, 2002
High-strength, damage-resistant rail having hardness distribution of excellent damage-resistance at its head top portion
NIPPON KOKAN KK4 citations60