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Kenji Masada
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Okayama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Oriented body, method for producing the same, device for producing...
Patent number
11,087,792
Issue date
Aug 10, 2021
The University of Tokyo
Shin-ichi Ohkoshi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Epsilon iron oxide and method for producing the same, magnetic coat...
Patent number
10,807,880
Issue date
Oct 20, 2020
The University of Tokyo
Shin-ichi Ohkoshi
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Oriented body containing e-iron oxide, method for producing the sa...
Patent number
10,669,161
Issue date
Jun 2, 2020
The University of Tokyo
Shin-ichi Ohkoshi
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Magnetic powder for magnetic recording medium
Patent number
9,741,479
Issue date
Aug 22, 2017
Dowa Electronics Materials Co., Ltd.
Kenji Masada
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method of producing magnetic powder for magnetic recording medium
Patent number
8,852,314
Issue date
Oct 7, 2014
Dowa Electronics Materials Co., Ltd.
Shinichi Konno
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hexagonal crystal ferrite magnetic powder for magnetic recording, m...
Patent number
8,801,956
Issue date
Aug 12, 2014
Dowa Electronics Materials Co., Ltd.
Kenji Masada
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Magnetic powder suitable for low-noise media
Patent number
8,110,048
Issue date
Feb 7, 2012
Dowa Electronics Materials Co., Ltd.
Kenji Masada
G11 - INFORMATION STORAGE
Information
Patent Grant
High-weatherability iron nitride-based magnetic powder and method o...
Patent number
7,371,458
Issue date
May 13, 2008
Dowa Electronics Materials Co., Ltd.
Kenji Masada
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Iron nitride magnetic powder and method of producing the powder
Patent number
7,332,220
Issue date
Feb 19, 2008
Dowa Mining Co., Ltd.
Kenji Masada
G11 - INFORMATION STORAGE
Information
Patent Grant
Iron nitride system magnetic powder having good storage stability
Patent number
7,314,666
Issue date
Jan 1, 2008
Dowa Mining Co., Ltd.
Kenji Masada
G11 - INFORMATION STORAGE
Information
Patent Grant
Iron nitride magnetic powder and method of producing the powder
Patent number
7,241,501
Issue date
Jul 10, 2007
Dowa Mining Co., Ltd.
Kenji Masada
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
MAGNETIC SUBSTANCE, MAGNETIC TONER, AND MAGNETIC POWDER
Publication number
20190035521
Publication date
Jan 31, 2019
THE UNIVERSITY OF TOKYO
Shin-ichi OHKOSHI
C01 - INORGANIC CHEMISTRY
Information
Patent Application
ORIENTED BODY, METHOD FOR PRODUCING THE SAME, DEVICE FOR PRODUCING...
Publication number
20180366151
Publication date
Dec 20, 2018
THE UNIVERSITY OF TOKYO
Shin-ichi OHKOSHI
C01 - INORGANIC CHEMISTRY
Information
Patent Application
EPSILON IRON OXIDE AND METHOD FOR PRODUCING THE SAME, MAGNETIC COAT...
Publication number
20180170767
Publication date
Jun 21, 2018
THE UNIVERSITY OF TOKYO
Shin-ichi OHKOSHI
C01 - INORGANIC CHEMISTRY
Information
Patent Application
MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM
Publication number
20160217817
Publication date
Jul 28, 2016
DOWA ELECTRONICS MATERIALS CO., LTD.
Kenji MASADA
G11 - INFORMATION STORAGE
Information
Patent Application
MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM
Publication number
20150123026
Publication date
May 7, 2015
DOWA ELECTRONICS MATERIALS CO., LTD.
Kenji MASADA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
HEXAGONAL FERRITE MAGNETIC POWDER AND MAGNETIC RECORDING MEDIUM USI...
Publication number
20120298908
Publication date
Nov 29, 2012
DOWA ELECTRONICS MATERIALS CO., LTD.
Toshihiko Ueyama
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
HEXAGONAL CRYSTAL FERRITE MAGNETIC POWDER FOR MAGNETIC RECORDING, M...
Publication number
20120199782
Publication date
Aug 9, 2012
DOWA ELECTRONICS MATERIALS CO., LTD.
Kenji Masada
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Application
METHOD OF PRODUCING MAGNETIC POWDER FOR MAGNETIC RECORDING MEDIUM
Publication number
20110147642
Publication date
Jun 23, 2011
DOWA ELECTRONICS MATERIALS CO., LTD.
Shinichi KONNO
B22 - CASTING POWDER METALLURGY
Information
Patent Application
MAGNETIC POWDER SUITABLE FOR LOW-NOISE MEDIA
Publication number
20110123426
Publication date
May 26, 2011
DOWA ELECTRONICS MATERIALS CO., LTD.
Kenji MASADA
G11 - INFORMATION STORAGE
Information
Patent Application
Iron Nitride-Based Magnetic Powder, Process for Producing the Same,...
Publication number
20090252991
Publication date
Oct 8, 2009
Yuzo Ishikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Iron system magnetic powder having high coercive force, and magneti...
Publication number
20070111039
Publication date
May 17, 2007
Yuzo Ishikawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Magnetic powder for magnetic recording medium
Publication number
20070087229
Publication date
Apr 19, 2007
Shinichi Konno
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Magnetic powder suitable for low-noise media
Publication number
20070042230
Publication date
Feb 22, 2007
Kenji Masada
G11 - INFORMATION STORAGE
Information
Patent Application
Iron nitride system magnetic powder having good storage stability
Publication number
20060131537
Publication date
Jun 22, 2006
Kenji Masada
G11 - INFORMATION STORAGE
Information
Patent Application
Iron nitride magnetic powder and method of producing the powder
Publication number
20050208320
Publication date
Sep 22, 2005
Kenji Masada
G11 - INFORMATION STORAGE
Information
Patent Application
Iron nitride magnetic powder and method of producing the powder
Publication number
20050123754
Publication date
Jun 9, 2005
Kenji Masada
G11 - INFORMATION STORAGE