Inventor

SAKAKIBARA AKIFUMI

JP16 patents

⚠️ This page may combine multiple inventors who share the name “SAKAKIBARA AKIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON STEEL CORP

10 patents

US12448660B2Oct 21, 2025

Hot-rolled steel sheet and method for manufacturing same

NIPPON STEEL CORP0 citations61

US12442062B2Oct 14, 2025

Hot-rolled steel sheet

NIPPON STEEL CORP0 citations51

US12534785B2Jan 27, 2026

Hot-rolled steel sheet

NIPPON STEEL CORP0 citations50

US12435382B2Oct 7, 2025

Hot-rolled steel sheet

NIPPON STEEL CORP0 citations50

US12297524B2May 13, 2025

Hot-rolled steel sheet

NIPPON STEEL CORP0 citations49

US12180570B2Dec 31, 2024

Hot-rolled steel sheet

NIPPON STEEL CORP0 citations48

US11970758B2Apr 30, 2024

Hot-rolled steel sheet

NIPPON STEEL CORP0 citations48

US12123064B2Oct 22, 2024

Hot-rolled steel sheet

NIPPON STEEL CORP0 citations47

US12018352B2Jun 25, 2024

Hot rolled steel sheet

NIPPON STEEL CORP0 citations47

US12516392B2Jan 6, 2026

Hot-rolled steel sheet

NIPPON STEEL CORP0 citations44

NIPPON STEEL & SUMITOMO METAL CORP

6 patents

US10260124B2Apr 16, 2019

Hot-rolled steel sheet and manufacturing method thereof

NIPPON STEEL & SUMITOMO METAL CORP3 citations72

US11208702B2Dec 28, 2021

Hot-rolled steel sheet and manufacturing method thereof

NIPPON STEEL & SUMITOMO METAL CORP1 citations61

US10023929B2Jul 17, 2018

Hot-rolled steel sheet

NIPPON STEEL & SUMITOMO METAL CORP1 citations51

US11255005B2Feb 22, 2022

Hot-rolled steel sheet

NIPPON STEEL & SUMITOMO METAL CORP0 citations49

US10718040B2Jul 21, 2020

Hot-rolled steel sheet, steel material, and method for producing hot-rolled steel sheet

NIPPON STEEL & SUMITOMO METAL CORP0 citations48

US10655192B2May 19, 2020

Hot-rolled steel sheet

NIPPON STEEL & SUMITOMO METAL CORP0 citations36