Inventor
HAMAMURA HIDEYUKI
JP34 patents
⚠️ This page may combine multiple inventors who share the name “HAMAMURA HIDEYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON STEEL CORP
19 patentsUS8016951B2Sep 13, 2011
Low core loss grain-oriented electrical steel sheet and method for producing the same
NIPPON STEEL CORP8 citations84
US7442260B2Oct 28, 2008
Grain-oriented electrical steel sheet superior in electrical characteristics and method of production of same
NIPPON STEEL CORP17 citations84
US7230968B2Jun 12, 2007
Semiconductor laser device and solid-state laser device using same
NIPPON STEEL CORP12 citations83
US7045025B2May 16, 2006
Grain-oriented electrical steel sheet excellent in magnetic properties and method for producing the same
NIPPON STEEL CORP9 citations73
US7883586B2Feb 8, 2011
Method for production and apparatus for production of grain-oriented electrical steel sheet excellent in magnetic properties
NIPPON STEEL CORP3 citations63
US7763120B2Jul 27, 2010
Method of production of grain-oriented electrical steel sheet
NIPPON STEEL CORP4 citations63
US11970751B2Apr 30, 2024
Grain-oriented electrical steel sheet and method for manufacturing the same
NIPPON STEEL CORP0 citations62
US11898215B2Feb 13, 2024
Grain-oriented electrical steel sheet and method for manufacturing the same
NIPPON STEEL CORP0 citations62
US11651878B2May 16, 2023
Grain-oriented electrical steel sheet
NIPPON STEEL CORP0 citations62
US11393612B2Jul 19, 2022
Grain-oriented electrical steel sheet
NIPPON STEEL CORP0 citations62
US8034196B2Oct 11, 2011
Low core loss grain-oriented electrical steel plate and method of manufacturing the same
NIPPON STEEL CORP6 citations62
US12424360B2Sep 23, 2025
Grain-oriented electrical steel sheet and method for manufacturing same
NIPPON STEEL CORP1 citations61
US12512240B2Dec 30, 2025
Grain-oriented electrical steel sheet and method for manufacturing same
NIPPON STEEL CORP1 citations60
US12031191B2Jul 9, 2024
Grain-oriented electrical steel sheet and method for manufacturing same
NIPPON STEEL CORP0 citations59
US12397373B2Aug 26, 2025
Groove processing device and groove processing method
NIPPON STEEL CORP0 citations52
US12173378B2Dec 24, 2024
Method for manufacturing grain-oriented electrical steel sheet
NIPPON STEEL CORP0 citations52
US11697856B2Jul 11, 2023
Grain-oriented electrical steel sheet and manufacturing method thereof
NIPPON STEEL CORP0 citations52
US11551838B2Jan 10, 2023
Grain-oriented electrical steel sheet
NIPPON STEEL CORP0 citations51
US11661636B2May 30, 2023
Method for manufacturing grain-oriented electrical steel sheet and grain-oriented electrical steel sheet
NIPPON STEEL CORP0 citations47
NIPPON STEEL & SUMITOMO METAL CORP
10 patentsUS10610964B2Apr 7, 2020
Grain-oriented electrical steel sheet causing low core loss and low magnetostriction
NIPPON STEEL & SUMITOMO METAL CORP3 citations73
US10131018B2Nov 20, 2018
Grain-oriented magnetic steel sheet and method of producing the same
NIPPON STEEL & SUMITOMO METAL CORP2 citations73
US11498156B2Nov 15, 2022
Laser processing apparatus
NIPPON STEEL & SUMITOMO METAL CORP1 citations62
US10675714B2Jun 9, 2020
Grain-oriented electrical steel sheet
NIPPON STEEL & SUMITOMO METAL CORP1 citations62
US10906134B2Feb 2, 2021
Grain-oriented electrical steel sheet
NIPPON STEEL & SUMITOMO METAL CORP0 citations52
US10773338B2Sep 15, 2020
Laser processing apparatus
NIPPON STEEL & SUMITOMO METAL CORP0 citations42
US9607744B2Mar 28, 2017
Laser processing apparatus and laser irradiation method
NIPPON STEEL & SUMITOMO METAL CORP0 citations42
US10662491B2May 26, 2020
Grain-oriented electrical steel sheet
NIPPON STEEL & SUMITOMO METAL CORP0 citations41
US10434606B2Oct 8, 2019
Grain-oriented electrical steel sheet
NIPPON STEEL & SUMITOMO METAL CORP0 citations41
US10385418B2Aug 20, 2019
Grain-oriented electrical steel sheet
NIPPON STEEL & SUMITOMO METAL CORP0 citations41
SAKAI TATSUHIKO
3 patentsUS9139886B2Sep 22, 2015
Grain-oriented electrical steel sheet and method for producing same
SAKAI TATSUHIKO6 citations73
US8657968B2Feb 25, 2014
Grain-oriented electrical steel sheet and method of manufacturing the same
SAKAI TATSUHIKO2 citations62
US8277574B2Oct 2, 2012
Method for manufacturing grain-oriented electromagnetic steel sheet whose magnetic domains are controlled by laser beam irradiation
SAKAI TATSUHIKO5 citations60