Takao Imagawa

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Ferromagnetic compound magnet
- Patent number 8,764,917
- Issue date Jul 1, 2014
- Hitachi, Ltd.
- Hiroyuki Suzuki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Rare earth magnet
- Patent number 8,303,732
- Issue date Nov 6, 2012
- Hitachi, Ltd.
- Hiroyuki Suzuki
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Compacted magnetic core, production method of the same, and motor f...
- Patent number 8,226,779
- Issue date Jul 24, 2012
- Hitachi, Ltd.
- Takao Imagawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
High resistance magnet and motor using the same
- Patent number 8,222,785
- Issue date Jul 17, 2012
- Hitachi, Ltd.
- Matahiro Komuro
- B82 - NANO-TECHNOLOGY
Information Patent Grant
High resistance magnet and motor using the same
- Patent number 7,972,450
- Issue date Jul 5, 2011
- Hitachi, Ltd.
- Matahiro Komuro
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Rare earth element magnet and method of manufacturing same
- Patent number 7,927,501
- Issue date Apr 19, 2011
- Hitachi, Ltd.
- Matahiro Komuro
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Magnet using binding agent and method of manufacturing the same
- Patent number 7,914,695
- Issue date Mar 29, 2011
- Hitachi, Ltd.
- Yuichi Satsu
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Sintered magnet and rotating machine equipped with the same
- Patent number 7,880,357
- Issue date Feb 1, 2011
- Hitachi, Ltd.
- Hiroyuki Suzuki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
MRI apparatus with high-resistance magnet
- Patent number 7,847,555
- Issue date Dec 7, 2010
- Hitachi, Ltd.
- Matahiro Komuro
- G01 - MEASURING TESTING
Information Patent Grant
Compacted magnetic core with high resistance, manufacturing method...
- Patent number 7,816,820
- Issue date Oct 19, 2010
- Hitachi, Ltd.
- Takao Imagawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Low loss magnet and magnetic circuit using the same
- Patent number 7,806,991
- Issue date Oct 5, 2010
- Hitachi, Ltd.
- Matahiro Komuro
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
High resistance magnet and motor using the same
- Patent number 7,696,662
- Issue date Apr 13, 2010
- Hitachi, Ltd.
- Matahiro Komuro
- G11 - INFORMATION STORAGE
Information Patent Grant
MRI apparatus with high-resistance magnet
- Patent number 7,352,184
- Issue date Apr 1, 2008
- Hitachi, Ltd.
- Matahiro Komuro
- G01 - MEASURING TESTING
Information Patent Grant
CPP magneto resistive head with decreased variation in asymmetry an...
- Patent number 7,292,416
- Issue date Nov 6, 2007
- Hitachi Global Storage Technologies Japan, Ltd.
- Takayoshi Ohtsu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto resistive head and magnetic recording apparatus
- Patent number 7,031,123
- Issue date Apr 18, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Takayoshi Ohtsu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistive head containing oxide layer
- Patent number 6,603,643
- Issue date Aug 5, 2003
- Hitachi, Ltd.
- Hiroyuki Hoshiya
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head
- Patent number 6,319,622
- Issue date Nov 20, 2001
- Hitachi, Ltd.
- Satoshi Shigematsu
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Read-write head
- Patent number 6,275,360
- Issue date Aug 14, 2001
- Hitachi, Ltd.
- Kazuhiro Nakamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistive head and magnetic disk apparatus
- Patent number 6,172,859
- Issue date Jan 9, 2001
- Hitachi, Ltd.
- Katsuro Watanabe
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetoresistive head and magnetic disk apparatus
- Patent number 6,157,526
- Issue date Dec 5, 2000
- Hitachi, Ltd.
- Katsuro Watanabe
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic head
- Patent number 6,120,919
- Issue date Sep 19, 2000
- Hitachi, Ltd.
- Satoshi Shigematsu
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetoresistive head and manufacturing method therefor
- Patent number 6,088,196
- Issue date Jul 11, 2000
- Hitachi, Ltd.
- Shigeru Tadokoro
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistive head and magnetic disk apparatus
- Patent number 5,995,338
- Issue date Nov 30, 1999
- Hitachi, Ltd.
- Katsuro Watanabe
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic head and magnetic disk apparatus provided therewith
- Patent number 5,969,910
- Issue date Oct 19, 1999
- Hitachi, Ltd.
- Takao Imagawa
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic transducer and magnetic recording device utilizing materia...
- Patent number 5,872,690
- Issue date Feb 16, 1999
- Hitachi, Ltd.
- Shigeru Tadokoro
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic disc apparatus with head having magneto-resistance effect
- Patent number 5,726,838
- Issue date Mar 10, 1998
- Hitachi, Ltd.
- Susumu Soeya
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc apparatus
- Patent number 5,668,685
- Issue date Sep 16, 1997
- Hitachi, Ltd.
- Susumu Soeya
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistive head
- Patent number 5,436,777
- Issue date Jul 25, 1995
- Hitachi, Ltd.
- Susumu Soeya
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin film magnetic head and the method of fabricating the same
- Patent number 5,214,840
- Issue date Jun 1, 1993
- Hitachi, Ltd.
- Takao Imagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording apparatus and magnetic head with superconducting...
- Patent number 5,109,312
- Issue date Apr 28, 1992
- Hitachi, Ltd.
- Takahiko Kato
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
SINTERED MAGNET AND PROCESS FOR PRODUCTION THEREOF
- Publication number 20150170809
- Publication date Jun 18, 2015
- Hitachi, Ltd
- Matahiro Komuro
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
SINTERED MAGNET AND PRODUCTION PROCESS THEREFOR
- Publication number 20150162117
- Publication date Jun 11, 2015
- Hitachi, Ltd
- Matahiro Komuro
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MAGNETIC CORE AND FORMING METHOD THEREOF
- Publication number 20130076475
- Publication date Mar 28, 2013
- Hitachi, Ltd.
- Takao IMAGAWA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SINTERED MAGNET AND ROTATING ELECTRIC MACHINE USING SAME
- Publication number 20120025651
- Publication date Feb 2, 2012
- Matahiro Komuro
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
HIGH RESISTANCE MAGNET AND MOTOR USING THE SAME
- Publication number 20110254646
- Publication date Oct 20, 2011
- MATAHIRO KOMURO
- G11 - INFORMATION STORAGE
Information Patent Application
FERROMAGNETIC COMPOUND MAGNET
- Publication number 20110133112
- Publication date Jun 9, 2011
- Hitachi, Ltd.
- Hiroyuki SUZUKI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
RARE EARTH MAGNET
- Publication number 20100194509
- Publication date Aug 5, 2010
- Hitachi, Ltd.
- Hiroyuki SUZUKI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
HIGH RESISTANCE MAGNET AND MOTOR USING THE SAME
- Publication number 20100141367
- Publication date Jun 10, 2010
- MATAHIRO KOMURO
- G11 - INFORMATION STORAGE
Information Patent Application
Sintered Magnet and Rotating Machine Equipped with the Same
- Publication number 20100079025
- Publication date Apr 1, 2010
- Hitachi, Ltd
- Hiroyuki Suzuki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
High Resistivity Compressed Magnetic Core
- Publication number 20090148718
- Publication date Jun 11, 2009
- Hitachi, Ltd.
- Takao IMAGAWA
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Rare earth element magnet
- Publication number 20080317620
- Publication date Dec 25, 2008
- Hitachi, Ltd.
- Hiroyuki Suzuki
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
COMPACTED MAGNETIC CORE, PRODUCTION METHOD OF THE SAME, AND MOTOR F...
- Publication number 20080260564
- Publication date Oct 23, 2008
- Takao Imagawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
MRI Apparatus With High-Resistance Magnet
- Publication number 20080171216
- Publication date Jul 17, 2008
- Matahiro Komuro
- G01 - MEASURING TESTING
Information Patent Application
RARE EARTH ELEMENT MAGNET AND METHOD OF MANUFACTURING SAME
- Publication number 20080117008
- Publication date May 22, 2008
- Matahiro Komuro
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
COMPACTED MAGNETIC CORE WITH HIGH RESISTANCE, MANUFACTURING METHOD...
- Publication number 20080100154
- Publication date May 1, 2008
- Takao Imagawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
HIGH RESISTANCE MAGNET AND MOTOR USING THE SAME
- Publication number 20080054738
- Publication date Mar 6, 2008
- MATAHIRO KOMURO
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic resistive head and magnetic recording apparatus
- Publication number 20080043376
- Publication date Feb 21, 2008
- Hitachi, Ltd.
- Takayoshi Ohtsu
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC POWDER, SOFT MAGNETIC COMPOSITE, AND METHOD OF FORMING SAME
- Publication number 20080008897
- Publication date Jan 10, 2008
- Takao IMAGAWA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Magnet Using Binding Agent and Method of Manufacturing the Same
- Publication number 20070209737
- Publication date Sep 13, 2007
- HITACHI, LTD.
- Yuichi Satsu
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
MRI apparatus with high-resistance magnet
- Publication number 20070159171
- Publication date Jul 12, 2007
- Matahiro Komuro
- G01 - MEASURING TESTING
Information Patent Application
Low loss magnet and magnetic circuit using the same
- Publication number 20070151632
- Publication date Jul 5, 2007
- Matahiro Komuro
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Magnetic resistive head and magnetic recording apparatus
- Publication number 20060152864
- Publication date Jul 13, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Takayoshi Ohtsu
- G11 - INFORMATION STORAGE
Information Patent Application
Magneto resistive head and magnetic recording apparatus
- Publication number 20040052009
- Publication date Mar 18, 2004
- HITACHI GLOBAL STORAGE TECHNOLOGIES
- Takayoshi Ohtsu
- G11 - INFORMATION STORAGE
Information Patent Application
Lamination comprising oxide layer, magnetoresistive head using the...
- Publication number 20030091864
- Publication date May 15, 2003
- Katsumi Hoshino
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetoresistive head containing oxide layer
- Publication number 20020041473
- Publication date Apr 11, 2002
- Hiroyuki Hoshiya
- B82 - NANO-TECHNOLOGY

Takao Imagawa

Person

Patents Grantslast 30 patents

Ferromagnetic compound magnet

Rare earth magnet

Compacted magnetic core, production method of the same, and motor f...

High resistance magnet and motor using the same

High resistance magnet and motor using the same

Rare earth element magnet and method of manufacturing same

Magnet using binding agent and method of manufacturing the same

Sintered magnet and rotating machine equipped with the same

MRI apparatus with high-resistance magnet

Compacted magnetic core with high resistance, manufacturing method...

Low loss magnet and magnetic circuit using the same

High resistance magnet and motor using the same

MRI apparatus with high-resistance magnet

CPP magneto resistive head with decreased variation in asymmetry an...

Magneto resistive head and magnetic recording apparatus

Magnetoresistive head containing oxide layer

Magnetic head

Read-write head

Magnetoresistive head and magnetic disk apparatus

Magnetoresistive head and magnetic disk apparatus

Magnetic head

Magnetoresistive head and manufacturing method therefor

Magnetoresistive head and magnetic disk apparatus

Magnetic head and magnetic disk apparatus provided therewith

Magnetic transducer and magnetic recording device utilizing materia...

Magnetic disc apparatus with head having magneto-resistance effect

Magnetic disc apparatus

Magnetoresistive head

Thin film magnetic head and the method of fabricating the same

Magnetic recording apparatus and magnetic head with superconducting...

Patents Applicationslast 30 patents

SINTERED MAGNET AND PROCESS FOR PRODUCTION THEREOF

SINTERED MAGNET AND PRODUCTION PROCESS THEREFOR

MAGNETIC CORE AND FORMING METHOD THEREOF

SINTERED MAGNET AND ROTATING ELECTRIC MACHINE USING SAME

HIGH RESISTANCE MAGNET AND MOTOR USING THE SAME

FERROMAGNETIC COMPOUND MAGNET

RARE EARTH MAGNET

HIGH RESISTANCE MAGNET AND MOTOR USING THE SAME

Sintered Magnet and Rotating Machine Equipped with the Same

High Resistivity Compressed Magnetic Core

Rare earth element magnet

COMPACTED MAGNETIC CORE, PRODUCTION METHOD OF THE SAME, AND MOTOR F...

MRI Apparatus With High-Resistance Magnet

RARE EARTH ELEMENT MAGNET AND METHOD OF MANUFACTURING SAME

COMPACTED MAGNETIC CORE WITH HIGH RESISTANCE, MANUFACTURING METHOD...

HIGH RESISTANCE MAGNET AND MOTOR USING THE SAME

Magnetic resistive head and magnetic recording apparatus

MAGNETIC POWDER, SOFT MAGNETIC COMPOSITE, AND METHOD OF FORMING SAME

Magnet Using Binding Agent and Method of Manufacturing the Same

MRI apparatus with high-resistance magnet

Low loss magnet and magnetic circuit using the same

Magnetic resistive head and magnetic recording apparatus

Magneto resistive head and magnetic recording apparatus

Lamination comprising oxide layer, magnetoresistive head using the...

Magnetoresistive head containing oxide layer