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Yukinori Oba
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Kitakyushu-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Manufacturing method for laminated core and manufacturing apparatus...
Patent number
9,539,799
Issue date
Jan 10, 2017
Mitsui High-tec, Inc.
Yukinori Oba
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Method of producing iron core
Patent number
9,511,406
Issue date
Dec 6, 2016
Mitsui High-Tec, Inc.
Yukinori Oba
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Method of producing iron core and apparatus for producing iron core
Patent number
9,511,405
Issue date
Dec 6, 2016
Mitsui High-Tec, Inc.
Yukinori Oba
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Patents Applications
last 30 patents
Information
Patent Application
METHOD OF PRODUCING IRON CORE
Publication number
20150075340
Publication date
Mar 19, 2015
MITSUI HIGH-TEC , INC.
Yukinori OBA
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
METHOD OF PRODUCING IRON CORE AND APPARATUS FOR PRODUCING IRON CORE
Publication number
20150000487
Publication date
Jan 1, 2015
MITSUI HIGH-TEC , INC.
Yukinori OBA
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
MANUFACTURING METHOD FOR LAMINATED CORE AND MANUFACTURING APPARATUS...
Publication number
20140231003
Publication date
Aug 21, 2014
MITSUI HIGH-TEC, INC.
Yukinori Oba
B32 - LAYERED PRODUCTS
Information
Patent Application
Method of producing iron core and apparatus for producing iron core
Publication number
20090178269
Publication date
Jul 16, 2009
Yukinori Oba
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method of producing iron core and apparatus for producing iron core
Publication number
20070193329
Publication date
Aug 23, 2007
Yukinori Oba
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method of producing iron core and apparatus for producing iron core
Publication number
20050109178
Publication date
May 26, 2005
Mitsui High-tec, Inc..
Yukinori Oba
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...