Inventor
SAKUMA YASUHARU
JP12 patents
⚠️ This page may combine multiple inventors who share the name “SAKUMA YASUHARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON STEEL CORP
7 patentsUS6544354B1Apr 8, 2003
High-strength steel sheet highly resistant to dynamic deformation and excellent in workability and process for the production thereof
NIPPON STEEL CORP41 citations92
US6319338B1Nov 20, 2001
High-strength steel plate having high dynamic deformation resistance and method of manufacturing the same
NIPPON STEEL CORP35 citations92
US5618355AApr 8, 1997
High-strength steel sheet suitable for deep drawing and process for producing the same
NIPPON STEEL CORP23 citations91
US6129992AOct 10, 2000
High-strength cold rolled steel sheet and high-strength plated steel sheet possessing improved geomagnetic shielding properties and process for producing the same
NIPPON STEEL CORP16 citations83
US5855696AJan 5, 1999
Ultra low carbon, cold rolled steel sheet and galvanized steel sheet having improved fatigue properties and processes for producing the same
NIPPON STEEL CORP17 citations82
US7413780B2Aug 19, 2008
High strength galvannealed steel sheet excellent in workability and a method of production of the same
NIPPON STEEL CORP6 citations61
US6511553B1Jan 28, 2003
Steel for steel excellent in workability and method of deoxidizing same
NIPPON STEEL CORP3 citations61
YOSHINAGA NAOKI
3 patentsUS8657970B2Feb 25, 2014
Hot-rolled steel sheet excellent in fatigue properties and stretch-flange formability and method for manufacturing the same
YOSHINAGA NAOKI4 citations71
US8747577B2Jun 10, 2014
High yield ratio and high-strength thin steel sheet superior in weldability and ductility, high-yield ratio high-strength hot-dip galvanized thin steel sheet, high-yield ratio high-strength hot-dip galvannealed thin steel sheet, and methods of production of same
YOSHINAGA NAOKI5 citations70
US8084143B2Dec 27, 2011
High-yield-ratio and high-strength thin steel sheet superior in weldability and ductility, high-yield-ratio high-strength hot-dip galvanized thin steel sheet, high-yield ratio high-strength hot-dip galvannealed thin steel sheet, and methods of production of same
YOSHINAGA NAOKI1 citations49
AZUMA MASAFUMI
2 patentsUS10023947B2Jul 17, 2018
High strength steel plate with ultimate tensile strength of 900 MPa or more excellent in hydrogen embrittlement resistance and method of production of same
AZUMA MASAFUMI0 citations50
US8163108B2Apr 24, 2012
High-strength cold-rolled steel sheet, high-strength galvanized steel sheet, and high-strength alloyed hot-dip galvanized steel sheet having excellent formability and weldability, and methods for manufacturing the same
AZUMA MASAFUMI0 citations39