Inventor
YOKOYAMA TAKAFUMI
JP23 patents
⚠️ This page may combine multiple inventors who share the name “YOKOYAMA TAKAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON STEEL CORP
17 patentsUS11905570B2Feb 20, 2024
Hot dip galvanized steel sheet and method for producing same
NIPPON STEEL CORP2 citations73
US11814708B2Nov 14, 2023
Hot dip galvanized steel sheet and method for producing same
NIPPON STEEL CORP2 citations73
US11447848B2Sep 20, 2022
Steel sheet and manufacturing method of therefor
NIPPON STEEL CORP2 citations71
US11377710B2Jul 5, 2022
Steel sheet and manufacturing method therefor
NIPPON STEEL CORP2 citations71
US11332803B2May 17, 2022
High strength hot-dip galvanized steel sheet and production method therefor
NIPPON STEEL CORP2 citations70
US12281392B2Apr 22, 2025
Hot dip galvanized steel sheet and method for producing same
NIPPON STEEL CORP0 citations52
US12006562B2Jun 11, 2024
Hot dip galvanized steel sheet and method for producing same
NIPPON STEEL CORP0 citations52
US11970752B2Apr 30, 2024
Steel sheet
NIPPON STEEL CORP0 citations52
US11859259B2Jan 2, 2024
Zinc-plated steel sheet and manufacturing method thereof
NIPPON STEEL CORP0 citations52
US11685963B2Jun 27, 2023
Zinc-plated steel sheet and manufacturing method thereof
NIPPON STEEL CORP0 citations52
US11680303B2Jun 20, 2023
Steel sheet and manufacturing method therefor
NIPPON STEEL CORP0 citations52
US12305266B2May 20, 2025
High-strength steel plate having excellent formability, toughness and weldability, and production method of same
NIPPON STEEL CORP0 citations51
US11885025B2Jan 30, 2024
High-strength steel sheet having excellent moldability and impact resistance, and method for manufacturing high-strength steel sheet having excellent moldability and impact resistance
NIPPON STEEL CORP0 citations51
US12460285B2Nov 4, 2025
Steel sheet
NIPPON STEEL CORP0 citations50
US12098440B2Sep 24, 2024
Steel sheet and method for producing same
NIPPON STEEL CORP0 citations50
US11732321B2Aug 22, 2023
Steel sheet and method of producing same
NIPPON STEEL CORP0 citations50
US11326234B2May 10, 2022
Cold-rolled steel sheet and hot-dip galvanized cold-rolled steel sheet
NIPPON STEEL CORP0 citations49
NIPPON STEEL & SUMITOMO METAL CORP
3 patentsUS10724114B2Jul 28, 2020
High-strength cold-rolled steel sheet, high-strength hot-dip galvanized steel sheet and high-strength galvannealed steel sheet
NIPPON STEEL & SUMITOMO METAL CORP2 citations73
US11174529B2Nov 16, 2021
High-strength steel sheet and method of manufacturing the same
NIPPON STEEL & SUMITOMO METAL CORP0 citations50
US10718044B2Jul 21, 2020
Hot-dip galvanized steel sheet
NIPPON STEEL & SUMITOMO METAL CORP0 citations41