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Shunsuke Arakawa
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Saitama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Methods for producing iron-based amorphous alloy ribbon and nanocry...
Patent number
6,648,994
Issue date
Nov 18, 2003
Hitachi Metals, Ltd.
Jun Sunakawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Soft magnetic alloy strip, magnetic member using the same, and manu...
Patent number
6,425,960
Issue date
Jul 30, 2002
Hitachi Metals, Ltd.
Yoshihito Yoshizawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Method for winding rapidly quenched thin ribbon, apparatus for prod...
Patent number
6,405,787
Issue date
Jun 18, 2002
Hitachi Metals, Ltd.
Yoshio Bizen
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Magnetic core for RF accelerating cavity and the cavity
Patent number
6,246,172
Issue date
Jun 12, 2001
Hitachi Metals, Ltd.
Yoshio Bizen
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Miniaturized transformer and inverter circuit and discharge tube gl...
Patent number
6,031,341
Issue date
Feb 29, 2000
Hitachi Metals, Ltd.
Yoshihito Yoshizawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Nanocrystalline alloy having excellent pulse attenuation characteri...
Patent number
5,966,064
Issue date
Oct 12, 1999
Hitachi Metals Ltd.
Yoshihito Yoshizawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Magnetic core for pulse transformer and pulse transformer made thereof
Patent number
5,725,686
Issue date
Mar 10, 1998
Hitachi Metals, Ltd.
Yoshihito Yoshizawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Alloy with ultrafine crystal grains excellent in corrosion resistance
Patent number
5,658,398
Issue date
Aug 19, 1997
Hitachi Metals, Ltd.
Yoshihito Yoshizawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Active filter circuit and power supply apparatus including same
Patent number
5,635,828
Issue date
Jun 3, 1997
Hitachi Metals, Ltd.
Yoshihito Yoshizawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Method of producing nanocrystalline alloy having high permeability
Patent number
5,611,871
Issue date
Mar 18, 1997
Hitachi Metals, Ltd.
Yoshihito Yoshizawa
C21 - METALLURGY OF IRON
Information
Patent Grant
Magnetic core element for antenna, thin-film antenna, and card equi...
Patent number
5,567,537
Issue date
Oct 22, 1996
Hitachi Metals, Ltd.
Yoshihito Yoshizawa
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method for making wound magnetic core
Patent number
5,083,366
Issue date
Jan 28, 1992
Hitachi Metals, Ltd.
Shunsuke Arakawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Wound magnetic core
Patent number
5,072,205
Issue date
Dec 10, 1991
Hitachi Metals, Ltd.
Shunsuke Arakawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Magnetic device for high-voltage pulse generating apparatuses
Patent number
4,983,859
Issue date
Jan 8, 1991
Hitachi Metals, Ltd.
Shin Nakajima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of producing thin metal ribbon
Patent number
4,768,458
Issue date
Sep 6, 1988
Hitachi, Metals Inc.
Shunsuke Arakawa
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for welding amorphous wound cores
Patent number
4,686,347
Issue date
Aug 11, 1987
Hitachi Metals, Ltd.
Shunsuke Arakawa
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Magnetic direction sensor
Patent number
4,616,424
Issue date
Oct 14, 1986
Hitachi Metals, Ltd.
Shunsuke Arakawa
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Methods for producing iron-based amorphous alloy ribbon and nanocry...
Publication number
20010007266
Publication date
Jul 12, 2001
Jun Sunakawa
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Method for winding rapidly quenched thin ribbon, apparatus for prod...
Publication number
20010006100
Publication date
Jul 5, 2001
Yoshio Bizen
B22 - CASTING POWDER METALLURGY