Inventor

OKADA SEIYA

JP4 patents

Patents

4 patents

US11174539B2Nov 16, 2021

Steel material suitable for use in sour environment

NIPPON STEEL CORP0 citations59

US12371765B2Jul 29, 2025

Seamless steel pipe suitable for use in sour environment

NIPPON STEEL CORP0 citations55

US11898216B2Feb 13, 2024

Seamless steel pipe heat-treatment-finishing-treatment continuous facility

NIPPON STEEL CORP0 citations48

US11905580B2Feb 20, 2024

Seamless steel pipe suitable for use in sour environment

NIPPON STEEL CORP0 citations47