Inventor
KIJIMA HIDEO
JP11 patents
⚠️ This page may combine multiple inventors who share the name “KIJIMA HIDEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JFE STEEL CORP
10 patentsUS10472693B2Nov 12, 2019
Head hardened rail manufacturing method and manufacturing apparatus
JFE STEEL CORP2 citations69
US12516391B2Jan 6, 2026
Stainless steel seamless pipe and method for manufacturing same
JFE STEEL CORP0 citations61
US12359752B2Jul 15, 2025
Stainless steel pipe and method for manufacturing same
JFE STEEL CORP0 citations61
US12140265B2Nov 12, 2024
Seamless pipe and method for manufacturing same
JFE STEEL CORP0 citations61
US12331371B2Jun 17, 2025
Stainless steel pipe and method for manufacturing same
JFE STEEL CORP0 citations50
US12172202B2Dec 24, 2024
Skew rolling apparatus, method for manufacturing seamless pipe shell, and method for manufacturing seamless steel pipe
JFE STEEL CORP0 citations50
US11230747B2Jan 25, 2022
Method of quenching steel pipe, apparatus for quenching steel pipe, method of manufacturing steel pipe and facility for manufacturing steel pipe
JFE STEEL CORP0 citations50
US11453929B2Sep 27, 2022
Cooling device and production method for rail
JFE STEEL CORP0 citations48
US10563278B2Feb 18, 2020
Rail manufacturing method and manufacturing equipment
JFE STEEL CORP0 citations47
US10214795B2Feb 26, 2019
Rail manufacturing method and manufacturing equipment
JFE STEEL CORP0 citations47