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Chiba, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method for producing soft magnetic powdered core
Patent number
8,062,583
Issue date
Nov 22, 2011
Hitachi Powdered Metals Co., Ltd.
Chio Ishihara
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method for producing soft magnetic powdered core
Patent number
8,029,626
Issue date
Oct 4, 2011
Hitachi Powered Metals Co., Ltd.
Chio Ishihara
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Claw teeth type electric rotary machine and manufacturing method fo...
Patent number
7,649,298
Issue date
Jan 19, 2010
Hitachi Industrial Equipment Systems Co., Ltd.
Yuji Enomoto
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Three-phase permanent magnet brushless motor
Patent number
7,592,734
Issue date
Sep 22, 2009
Hitachi Industrial Equipment System Co., Ltd.
Yuji Enomoto
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Sintered plunger and production method therefor
Patent number
7,541,906
Issue date
Jun 2, 2009
Hitachi Powdered Metals Co., Ltd.
Kazuo Asaka
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Production method for soft magnetic sintered member
Patent number
7,470,332
Issue date
Dec 30, 2008
Hitachi Powdered Metals Co., Ltd.
Chio Ishihara
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Grant
Claw teeth motor core
Patent number
D572660
Issue date
Jul 8, 2008
Hitachi Industrial Equipment Systems Co., Ltd.
Yuji Enomoto
D13 - Equipment for production, distribution, or transformation of energy
Information
Patent Grant
Production method for powdered core
Patent number
7,273,527
Issue date
Sep 25, 2007
Hitachi Powdered Metals Co., Ltd.
Chio Ishihara
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Production method for powdered core
Patent number
7,211,158
Issue date
May 1, 2007
Hitachi Powdered Metals Co., Ltd.
Chio Ishihara
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Permanent magnet type rotor and method of manufacturing the rotor
Patent number
7,151,334
Issue date
Dec 19, 2006
Hitachi Powdered Metals Co., Ltd.
Kazuo Asaka
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Treatment solution for forming insulating layers on magnetic partic...
Patent number
6,344,273
Issue date
Feb 5, 2002
Hitachi, Ltd.
Yuichi Satsu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Manufacturing method of sintered composite machine component having...
Patent number
6,120,727
Issue date
Sep 19, 2000
Hitachi Powdered Metals Co., Ltd.
Kazuo Asaka
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for forming insulating layers on soft magnetic powder compo...
Patent number
6,054,219
Issue date
Apr 25, 2000
Hitachi, Ltd.
Yuichi Satsu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Process for making sintered composite mechanical parts
Patent number
4,539,197
Issue date
Sep 3, 1985
Hitachi Powdered Metals Co., Ltd.
Kazuo Asaka
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for making composite mechanical parts by sintering
Patent number
4,503,009
Issue date
Mar 5, 1985
Hitachi Powdered Metals Co., Ltd.
Kazuo Asaka
B22 - CASTING POWDER METALLURGY
Patents Applications
last 30 patents
Information
Patent Application
Method for producing soft magnetic powered core
Publication number
20080230737
Publication date
Sep 25, 2008
HITACHI POWERED METALS CO., LTD.
Chio Ishihara
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Method for producing soft magnetic powdered core
Publication number
20080232995
Publication date
Sep 25, 2008
Hitachi Powdered Metals Co., Ltd.
Chio Ishihara
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Claw Teeth Type Electric Rotary Machine and Manufacturing Method fo...
Publication number
20080018196
Publication date
Jan 24, 2008
Yuji Enomoto
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Application
Production Method For Soft Magnetic Sintered Member
Publication number
20070196231
Publication date
Aug 23, 2007
HITACHI POWERED METALS CO., LTD.
Chio Ishihara
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
Sintered plunger and production method therefor
Publication number
20070085644
Publication date
Apr 19, 2007
Hitachi Powdered Metals Co., Ltd.
Kazuo Asaka
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Production method for powdered core
Publication number
20070051430
Publication date
Mar 8, 2007
Hitachi Powdered Metals Co., Ltd.
Chio Ishihara
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Three-phase permanent magnet brushless motor
Publication number
20070046130
Publication date
Mar 1, 2007
Yuji Enomoto
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Permanent magnet type rotor and method of manufacturing the rotor
Publication number
20040025323
Publication date
Feb 12, 2004
Kazuo Asaka
H01 - BASIC ELECTRIC ELEMENTS