P

Inventor

FUJII HIROYASU

JP53 patents
⚠️ This page may combine multiple inventors who share the name “FUJII HIROYASU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON STEEL CORP

42 patents
US7471182B2Dec 30, 2008

Core having superior end face insulation and method of treating core end faces to give insulation coating

NIPPON STEEL CORP38 citations91
US5961744AOct 5, 1999

Grain oriented silicon steel sheet having low core loss and method of manufacturing same

NIPPON STEEL CORP34 citations91
US5565272AOct 15, 1996

Grain oriented silicon steel sheet having excellent primary film properties

NIPPON STEEL CORP39 citations90
US6461741B1Oct 8, 2002

Grain-oriented electromagnetic steel sheet with excellent coating properties and process for its manufacture

NIPPON STEEL CORP14 citations84
US7736449B2Jun 15, 2010

High-strength hot-dip galvanized steel sheet and method for producing the same

NIPPON STEEL CORP14 citations83
US7294412B2Nov 13, 2007

High-strength hop-dip galvanized steel sheet

NIPPON STEEL CORP12 citations83
US6613160B2Sep 2, 2003

Method to produce grain-oriented electrical steel sheet having high magnetic flux density

NIPPON STEEL CORP10 citations74
US5509976AApr 23, 1996

Method for producing a grain-oriented electrical steel sheet having a mirror surface and improved core loss

NIPPON STEEL CORP9 citations74
US5190597AMar 2, 1993

Process for producing grain-oriented electrical steel sheet having improved magnetic and surface film properties

NIPPON STEEL CORP7 citations74
US5129965AJul 14, 1992

Method of producing grain oriented silicon steel sheets each having a low watt loss and a mirror surface

NIPPON STEEL CORP7 citations74
US11742129B2Aug 29, 2023

Adhesively-laminated core, manufacturing method thereof, and electric motor

NIPPON STEEL CORP2 citations73
US5782998AJul 21, 1998

Grain oriented electrical steel sheet having specular surface

NIPPON STEEL CORP7 citations73
US12266971B2Apr 1, 2025

Adhesively-laminated core for stator, method of manufacturing the same, and electric motor

NIPPON STEEL CORP1 citations64
US12217889B2Feb 4, 2025

Grain-oriented electrical steel sheet, and steel sheet serving as base sheet for grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations63
US11499055B2Nov 15, 2022

Coating solution for forming insulating film for grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations63
US7850792B2Dec 14, 2010

Grain-oriented electrical steel sheet having insulating film not containing chromium and insulating film agent of same

NIPPON STEEL CORP6 citations63
US7364629B2Apr 29, 2008

Method for manufacturing grain-oriented silicon steel sheets with mirror-like surface

NIPPON STEEL CORP2 citations63
US12378676B2Aug 5, 2025

Grain-oriented electrical steel sheet and manufacturing method of the same

NIPPON STEEL CORP0 citations62
US12215398B2Feb 4, 2025

Coating liquid for forming insulation coating for grain-oriented electrical steel sheets, grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations62
US12157921B2Dec 3, 2024

Coating liquid for forming insulation coating for grain-oriented electrical steel sheet, method of manufacturing grain-oriented electrical steel sheet, and grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations62
US12123068B2Oct 22, 2024

Grain oriented electrical steel sheet and producing method thereof

NIPPON STEEL CORP0 citations62
US12104096B2Oct 1, 2024

Laminated core, laminated core manufacturing method, and electric motor

NIPPON STEEL CORP1 citations62
US12033776B2Jul 9, 2024

Non-oriented electrical steel sheet and method for manufacturing same

NIPPON STEEL CORP0 citations62
US11884988B2Jan 30, 2024

Base sheet for grain-oriented electrical steel sheet, grain-oriented silicon steel sheet which is used as material of base sheet for grain-oriented electrical steel sheet, method of manufacturing base sheet for grain-oriented electrical steel sheet, and method of manufacturing grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations62
US11855485B2Dec 26, 2023

Laminated core, method of manufacturing same, and electric motor

NIPPON STEEL CORP1 citations62
US11450460B2Sep 20, 2022

Grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations62
US11346005B2May 31, 2022

Grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations62
US11189407B2Nov 30, 2021

Grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations62
US11060159B2Jul 13, 2021

Grain-oriented electrical steel sheet and method of manufacturing grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations62
US6713187B2Mar 30, 2004

Grain-oriented silicon steel sheet excellent in adhesiveness to tension-creating insulating coating films and method for producing the same

NIPPON STEEL CORP2 citations62
US12215399B2Feb 4, 2025

Non-oriented electrical steel sheet and method for producing same

NIPPON STEEL CORP0 citations61
US7998284B2Aug 16, 2011

Grain-oriented electrical steel sheet having high tensile strength insulating film and method of treatment of such insulating film

NIPPON STEEL CORP5 citations60
US11948710B2Apr 2, 2024

Non-oriented electrical steel sheet and method for producing same

NIPPON STEEL CORP0 citations58
US12492477B2Dec 9, 2025

Non-oriented electrical steel sheet and surface treatment agent for non-oriented electrical steel sheet

NIPPON STEEL CORP0 citations52
US12469625B2Nov 11, 2025

Non-oriented electrical steel sheet

NIPPON STEEL CORP0 citations52
US12365973B2Jul 22, 2025

Manufacturing method of grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations52
US12359275B2Jul 15, 2025

Method for manufacturing grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations52
US12180558B2Dec 31, 2024

Method for manufacturing grain-oriented electrical steel sheet

NIPPON STEEL CORP0 citations52
US11990795B2May 21, 2024

Adhesively-laminated core for stator, method of manufacturing same, and electric motor

NIPPON STEEL CORP0 citations52
US6733599B2May 11, 2004

Method for producing grain-oriented silicon steel sheet not having inorganic mineral film

NIPPON STEEL CORP1 citations52
US12580107B2Mar 17, 2026

Grain oriented electrical steel sheet and producing method thereof

NIPPON STEEL CORP0 citations49
US12334237B2Jun 17, 2025

Non-oriented electrical steel sheet and method for producing same

NIPPON STEEL CORP0 citations49

NIPPON STEEL & SUMITOMO METAL CORP

5 patents

NITTETSU PLANT DESIGNING CORP

1 patent

TAKEDA KAZUTOSHI

1 patent

TAKAHASHI FUMIAKI

1 patent

Showing the top 50 of 53 patents by PatentIndex Score.