Inventor
HAYAKAWA YASUYUKI
JP42 patents
⚠️ This page may combine multiple inventors who share the name “HAYAKAWA YASUYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JFE STEEL CORP
21 patentsUS7371291B2May 13, 2008
Grain-oriented magnetic steel sheet having no undercoat film comprising forsterite as primary component and having good magnetic characteristics
JFE STEEL CORP7 citations74
US6942740B2Sep 13, 2005
Grain-oriented magnetic steel sheet having no undercoat film comprising forsterite as primary component and having good magnetic characteristics
JFE STEEL CORP8 citations74
US11066722B2Jul 20, 2021
Method of producing grain-oriented electrical steel sheet
JFE STEEL CORP3 citations72
US9708682B2Jul 18, 2017
Production method for grain-oriented electrical steel sheet
JFE STEEL CORP6 citations72
US6811619B2Nov 2, 2004
Method of manufacturing grain-oriented electrical steel sheets
JFE STEEL CORP12 citations71
US7465361B2Dec 16, 2008
Method for producing grain oriented magnetic steel sheet and grain oriented magnetic steel sheet
JFE STEEL CORP4 citations63
USRE39482EFeb 6, 2007
Method of making grain-oriented magnetic steel sheet having low iron loss
JFE STEEL CORP2 citations63
US12325892B2Jun 10, 2025
Method for manufacturing a grain-oriented electrical steel sheet
JFE STEEL CORP0 citations62
US11560603B2Jan 24, 2023
Grain-oriented electrical steel sheet and method for manufacturing same
JFE STEEL CORP0 citations62
US11198917B2Dec 14, 2021
Method for nitriding grain-oriented electrical steel sheet
JFE STEEL CORP0 citations62
US6676771B2Jan 13, 2004
Method of manufacturing grain-oriented electrical steel sheet
JFE STEEL CORP2 citations62
US11091842B2Aug 17, 2021
Oriented electromagnetic steel sheet and method for manufacturing oriented electromagnetic steel sheet
JFE STEEL CORP0 citations61
US10214793B2Feb 26, 2019
Method and device for nitriding grain-oriented electrical steel sheet
JFE STEEL CORP0 citations52
US11332801B2May 17, 2022
Method of producing grain-oriented electrical steel sheet
JFE STEEL CORP0 citations51
US10844452B2Nov 24, 2020
Grain-oriented electrical steel sheet and method for manufacturing the same
JFE STEEL CORP0 citations51
US10066286B2Sep 4, 2018
Apparatus and method for nitriding grain-oriented electrical steel sheet
JFE STEEL CORP0 citations51
US9905343B2Feb 27, 2018
Production method for grain-oriented electrical steel sheet and primary recrystallized steel sheet for production of grain-oriented electrical steel sheet
JFE STEEL CORP1 citations51
US9748028B2Aug 29, 2017
Method for producing grain-oriented electrical steel sheet
JFE STEEL CORP1 citations51
US11459629B2Oct 4, 2022
Method of producing grain-oriented electrical steel sheet
JFE STEEL CORP0 citations50
US10428403B2Oct 1, 2019
Method for manufacturing grain-oriented electrical steel sheet
JFE STEEL CORP0 citations41
US9978489B2May 22, 2018
Method of producing grain oriented electrical steel sheet
JFE STEEL CORP0 citations41
KAWASAKI STEEL CO
18 patentsUS6562473B1May 13, 2003
Electrical steel sheet suitable for compact iron core and manufacturing method therefor
KAWASAKI STEEL CO34 citations92
US6309473B1Oct 30, 2001
Method of making grain-oriented magnetic steel sheet having low iron loss
KAWASAKI STEEL CO17 citations92
US5666842ASep 16, 1997
Method of cold rolling grain-oriented silicon steel sheet having excellent and uniform magnetic characteristics along rolling direction of coil and a roll cooling controller for cold rolling mill using the cold rolling method
KAWASAKI STEEL CO21 citations89
US6322635B1Nov 27, 2001
Electromagnetic steel sheet and process for producing the same
KAWASAKI STEEL CO15 citations84
US6436199B1Aug 20, 2002
Non-oriented magnetic steel sheet having low iron loss and high magnetic flux density and manufacturing method therefor
KAWASAKI STEEL CO10 citations73
US5571342ANov 5, 1996
Decarburized steel sheet for thin oriented silicon steel sheet having improved coating/magnetic characteristics and method of producing the same
KAWASAKI STEEL CO10 citations73
US5330586AJul 19, 1994
Method of producing grain oriented silicon steel sheet having very excellent magnetic properties
KAWASAKI STEEL CO12 citations73
US5244511ASep 14, 1993
Method of manufacturing an oriented silicon steel sheet having improved magnetic flux density
KAWASAKI STEEL CO13 citations73
US5181972AJan 26, 1993
Process for producing grain oriented silicon steel sheets having excellent magnetic properties
KAWASAKI STEEL CO8 citations73
US5342454AAug 30, 1994
Method of producing grain oriented silicon steel sheet having low iron loss
KAWASAKI STEEL CO16 citations72
US5127971AJul 7, 1992
Method of producing grain oriented silicon steel sheets having improved magnetic properties and bending properties by electrolytic degreasing
KAWASAKI STEEL CO8 citations70
US6423157B2Jul 23, 2002
Method of making grain-oriented magnetic steel sheet having low iron loss
KAWASAKI STEEL CO4 citations63
US5306353AApr 26, 1994
Method of producing grain oriented silicon steel sheets having less iron loss
KAWASAKI STEEL CO6 citations62
US5269853ADec 14, 1993
Decarburized steel sheet for thin oriented silicon steel sheet having improved coating/magnetic characteristics and method of producing the same
KAWASAKI STEEL CO4 citations62
US5173128ADec 22, 1992
Method of producing oriented silicon steel sheet having very high magnetic flux density
KAWASAKI STEEL CO5 citations62
US5318639AJun 7, 1994
Method of manufacturing grain oriented silicon steel sheets
KAWASAKI STEEL CO5 citations61
US6432227B1Aug 13, 2002
Electromagnetic steel sheet and process for producing the same
KAWASAKI STEEL CO0 citations52
US6531001B2Mar 11, 2003
Non-oriented magnetic steel sheet having low iron loss and high magnetic flux density and manufacturing method therefor
KAWASAKI STEEL CO1 citations51