Inventor
OKUBO TOMOYUKI
JP35 patents
⚠️ This page may combine multiple inventors who share the name “OKUBO TOMOYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JFE STEEL CORP
33 patentsUS9194016B2Nov 24, 2015
Annealing separator for grain-oriented electromagnetic steel sheet
JFE STEEL CORP7 citations84
US11142813B2Oct 12, 2021
Non-oriented electrical steel sheet and manufacturing method therefor
JFE STEEL CORP2 citations73
US11136645B2Oct 5, 2021
Method for producing non-oriented electrical steel sheet, method for producing motor core, and motor core
JFE STEEL CORP6 citations73
US11104973B2Aug 31, 2021
Method for producing non-oriented electrical steel sheet, method for producing motor core, and motor core
JFE STEEL CORP3 citations73
US10941458B2Mar 9, 2021
Non-oriented electrical steel sheet, production method therefor, and motor core
JFE STEEL CORP2 citations73
US9805851B2Oct 31, 2017
Grain-oriented electrical steel sheet and method of producing the same
JFE STEEL CORP3 citations73
US9617615B2Apr 11, 2017
Grain-oriented electrical steel sheet and method for manufacturing same
JFE STEEL CORP2 citations73
US10316382B2Jun 11, 2019
Method for producing non-oriented electrical steel sheets
JFE STEEL CORP3 citations72
US10102951B2Oct 16, 2018
Non-oriented electrical steel sheet having excellent magnetic properties
JFE STEEL CORP4 citations72
US10526673B2Jan 7, 2020
Non-oriented electrical steel sheet and method for producing the same, and motor core and method of producing the same
JFE STEEL CORP5 citations71
US12448662B2Oct 21, 2025
Non-oriented electrical steel sheet and method for producing same
JFE STEEL CORP0 citations62
US12381024B2Aug 5, 2025
Non-oriented electrical steel sheet and method for manufacturing the same
JFE STEEL CORP0 citations62
US12348079B2Jul 1, 2025
Motor core and method of manufacturing the same
JFE STEEL CORP0 citations62
US12331376B2Jun 17, 2025
Non-oriented electrical steel sheet and method for producing same
JFE STEEL CORP0 citations62
US11962184B2Apr 16, 2024
Method for producing non-oriented electrical steel sheet, method for producing motor core, and motor core
JFE STEEL CORP0 citations62
US11946123B2Apr 2, 2024
Method of producing a non-oriented electrical steel sheet
JFE STEEL CORP1 citations62
US11894167B2Feb 6, 2024
Grain-oriented electrical steel sheet, iron core of transformer, transformer, and method for reducing noise of transformer
JFE STEEL CORP0 citations62
US11732319B2Aug 22, 2023
Non-oriented electrical steel sheet
JFE STEEL CORP0 citations62
US11649532B2May 16, 2023
Non-oriented electrical steel sheet and method of producing same
JFE STEEL CORP0 citations62
US11404189B2Aug 2, 2022
Non-oriented electrical steel sheet and method for manufacturing the same
JFE STEEL CORP0 citations62
US11286537B2Mar 29, 2022
Non-oriented electrical steel sheet and method of producing same
JFE STEEL CORP0 citations62
US11174526B2Nov 16, 2021
Grain-oriented electrical steel sheet and method of manufacturing same
JFE STEEL CORP1 citations62
US11056256B2Jul 6, 2021
Non-oriented electrical steel sheet and method of producing same
JFE STEEL CORP0 citations62
US10975451B2Apr 13, 2021
Method for producing non-oriented electrical steel sheet having excellent magnetic properties
JFE STEEL CORP0 citations62
US10704115B2Jul 7, 2020
Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet
JFE STEEL CORP1 citations62
US10626474B2Apr 21, 2020
Grain-oriented electrical steel sheet and method of manufacturing same
JFE STEEL CORP1 citations62
US11718891B2Aug 8, 2023
Non-oriented electrical steel sheet and method for producing same, and motor core and method for producing same
JFE STEEL CORP0 citations61
US11525169B2Dec 13, 2022
Non-oriented electrical steel sheet and method for producing same, and motor core and method for producing same
JFE STEEL CORP0 citations61
US12146209B2Nov 19, 2024
Non-oriented electrical steel sheet and method for manufacturing slab used as material for the same
JFE STEEL CORP0 citations58
US11225699B2Jan 18, 2022
Method for producing non-oriented electrical steel sheet
JFE STEEL CORP0 citations52
US10822678B2Nov 3, 2020
Non-oriented electrical steel sheet and method for producing the same
JFE STEEL CORP0 citations52
US11008633B2May 18, 2021
Non-oriented electrical steel sheet and production method thereof
JFE STEEL CORP0 citations51
US10760143B2Sep 1, 2020
High-silicon steel sheet and method of manufacturing the same
JFE STEEL CORP0 citations41