Masaru Muranishi

Person

Ibaraki-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic disk unit
- Patent number 8,274,755
- Issue date Sep 25, 2012
- Hitachi Global Storage Technologies, Netherlands B.V.
- Yuuji Ishima
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive and method of re-injecting low density gas in a hermetic...
- Patent number 8,248,724
- Issue date Aug 21, 2012
- Hitachi Global Storage Technologies, Netherlands B.V.
- Takako Hayakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Manufacturing method of base and manufacturing method of disk drive...
- Patent number 8,196,284
- Issue date Jun 12, 2012
- Hitachi Global Storage Technologies, Netherlands B.V.
- Kouki Uefune
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus
- Patent number 7,894,158
- Issue date Feb 22, 2011
- Hitachi Global Technologies Netherlands B.V.
- Kazuyoshi Hanada
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk drive with line contact
- Patent number 7,545,601
- Issue date Jun 9, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazuyoshi Hanada
- G11 - INFORMATION STORAGE
Information Patent Grant
Bearing mechanism for spindle motor in magnetic disk drive
- Patent number 7,441,959
- Issue date Oct 28, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazuyoshi Hanada
- G11 - INFORMATION STORAGE
Information Patent Grant
Spindle motor and magnetic disc device using thereof having radial...
- Patent number 6,771,460
- Issue date Aug 3, 2004
- Hitachi, Ltd.
- Katsutoshi Nii
- G11 - INFORMATION STORAGE
Information Patent Grant
Spindle motor and magnetic disc device with hydrodynamic bearings
- Patent number 6,680,814
- Issue date Jan 20, 2004
- Hitachi, Ltd.
- Katsutoshi Nii
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical switch, method of manufacturing same, and optical communica...
- Patent number 6,487,330
- Issue date Nov 26, 2002
- Hitachi, Ltd.
- Masaya Horino
- G02 - OPTICS
Information Patent Grant
Spindle motor and magnetic disc device with hydrodynamic bearing
- Patent number 6,469,866
- Issue date Oct 22, 2002
- Hitachi, Ltd.
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Patent number 6,369,980
- Issue date Apr 9, 2002
- Hitachi, Ltd.
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Patent number 6,369,981
- Issue date Apr 9, 2002
- Hitachi, Ltd.
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Magnetic disk apparatus, including spindle motor having air flow pa...
- Patent number 6,356,408
- Issue date Mar 12, 2002
- Hitachi, Ltd.
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Near-field optical head and manufacturing method thereof and optica...
- Patent number 6,304,527
- Issue date Oct 16, 2001
- Hitachi, Ltd.
- Kenchi Ito
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Patent number 6,243,230
- Issue date Jun 5, 2001
- Hitachi, Ltd.
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Optical switch, method of manufacturing same, and optical communica...
- Patent number 6,219,472
- Issue date Apr 17, 2001
- Hitachi, Ltd.
- Masaya Horino
- G02 - OPTICS
Information Patent Grant
Semiconductor laser device and optical disk drive
- Patent number 5,781,576
- Issue date Jul 14, 1998
- Hitachi, Ltd.
- Katsuhiko Kimura
- G11 - INFORMATION STORAGE
Information Patent Grant
Interferometer, optical scanning type tunneling microscope and opti...
- Patent number 5,508,805
- Issue date Apr 16, 1996
- Hitachi, Ltd.
- Masaru Muranishi
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical information storage medium control apparatus
- Patent number 5,481,515
- Issue date Jan 2, 1996
- Hitachi, Ltd.
- Hidehiko Kando
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording device having an optical head capable of...
- Patent number 5,448,536
- Issue date Sep 5, 1995
- Hitachi, Ltd.
- Masaru Muranishi
- G11 - INFORMATION STORAGE
Information Patent Grant
Integrated optical information detector for an optical information...
- Patent number 5,404,009
- Issue date Apr 4, 1995
- Hitachi, Ltd.
- Hidehiko Kando
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
REMOVABLE COVER ASSEMBLY FOR A DATA STORAGE DEVICE
- Publication number 20130222947
- Publication date Aug 29, 2013
- Taisuke Sugii
- G11 - INFORMATION STORAGE
Information Patent Application
DISK DRIVE AND METHOD OF RE-INJECTING LOW DENSITY GAS IN A HERMETIC...
- Publication number 20110038076
- Publication date Feb 17, 2011
- Takako Hayakawa
- G11 - INFORMATION STORAGE
Information Patent Application
DISK DRIVE WITH MICRO-ACTUATOR INTERCONNECT CONDITIONING
- Publication number 20110013319
- Publication date Jan 20, 2011
- Eiji Soga
- G11 - INFORMATION STORAGE
Information Patent Application
Manufacturing method of base and Manufacturing method of disk drive...
- Publication number 20090241322
- Publication date Oct 1, 2009
- Kouki Uefune
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk unit
- Publication number 20080024930
- Publication date Jan 31, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Yuuji Ishima
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus
- Publication number 20070263320
- Publication date Nov 15, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazuyoshi Hanada
- G11 - INFORMATION STORAGE
Information Patent Application
Bearing mechanism for spindle motor in magnetic disk drive
- Publication number 20060133707
- Publication date Jun 22, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazuyoshi Hanada
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive with line contact
- Publication number 20060126219
- Publication date Jun 15, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Kazuyoshi Hanada
- G11 - INFORMATION STORAGE
Information Patent Application
Spindle motor and magnetic disc device using thereof
- Publication number 20030011929
- Publication date Jan 16, 2003
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Spindle motor and magnetic disc device using thereof
- Publication number 20020196582
- Publication date Dec 26, 2002
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Magnetic disk apparatus
- Publication number 20020071204
- Publication date Jun 13, 2002
- Hitachi, Ltd.
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Publication number 20020018315
- Publication date Feb 14, 2002
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Disk drive unit with hydrodynamic fluid bearing unit and disk devic...
- Publication number 20010021080
- Publication date Sep 13, 2001
- Katsutoshi Nii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Optical switch, method of manufacturing same, and optical communica...
- Publication number 20010017957
- Publication date Aug 30, 2001
- Masaya Horino
- G02 - OPTICS

Masaru Muranishi

Person

Patents Grantslast 30 patents

Magnetic disk unit

Disk drive and method of re-injecting low density gas in a hermetic...

Manufacturing method of base and manufacturing method of disk drive...

Magnetic disk apparatus

Magnetic disk drive with line contact

Bearing mechanism for spindle motor in magnetic disk drive

Spindle motor and magnetic disc device using thereof having radial...

Spindle motor and magnetic disc device with hydrodynamic bearings

Optical switch, method of manufacturing same, and optical communica...

Spindle motor and magnetic disc device with hydrodynamic bearing

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...

Magnetic disk apparatus, including spindle motor having air flow pa...

Near-field optical head and manufacturing method thereof and optica...

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...

Optical switch, method of manufacturing same, and optical communica...

Semiconductor laser device and optical disk drive

Interferometer, optical scanning type tunneling microscope and opti...

Optical information storage medium control apparatus

Magneto-optical recording device having an optical head capable of...

Integrated optical information detector for an optical information...

Patents Applicationslast 30 patents

REMOVABLE COVER ASSEMBLY FOR A DATA STORAGE DEVICE

DISK DRIVE AND METHOD OF RE-INJECTING LOW DENSITY GAS IN A HERMETIC...

DISK DRIVE WITH MICRO-ACTUATOR INTERCONNECT CONDITIONING

Manufacturing method of base and Manufacturing method of disk drive...

Magnetic disk unit

Magnetic disk apparatus

Bearing mechanism for spindle motor in magnetic disk drive

Magnetic disk drive with line contact

Spindle motor and magnetic disc device using thereof

Spindle motor and magnetic disc device using thereof

Magnetic disk apparatus

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...

Disk drive unit with hydrodynamic fluid bearing unit and disk devic...

Optical switch, method of manufacturing same, and optical communica...