Masahiko Sega

Person

Hiratuka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic disc unit with gap between magnetic disc and shroud
- Patent number 7,643,245
- Issue date Jan 5, 2010
- Hitachi Global Storage Technologies Japan, Ltd.
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk drive with compensation against disturbance
- Patent number 7,580,221
- Issue date Aug 25, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Masahiko Sega
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk drive with elastic support member
- Patent number 7,535,672
- Issue date May 19, 2009
- Hitachi Global Storage Technologies Netherlands B.V.
- Masahiko Sega
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk drive with mechanism to suppress vibration of wiring...
- Patent number 7,457,083
- Issue date Nov 25, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Maeda Naoki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc unit with gap between magnetic disc and shroud
- Patent number 7,336,440
- Issue date Feb 26, 2008
- Hitachi Global Storage Technologies Japan, Ltd.
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus with shroud and having open space downstrea...
- Patent number 7,330,334
- Issue date Feb 12, 2008
- Hitachi Global Storage Technologies Japan, Ltd.
- Hayato Shimizu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc unit with range of gap between disc and shroud
- Patent number 7,072,141
- Issue date Jul 4, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Carriage arm assembly for magnetic disk drive
- Patent number 6,982,852
- Issue date Jan 3, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Shin Nagahiro
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device
- Patent number 6,927,936
- Issue date Aug 9, 2005
- Hitachi, Ltd.
- Satomitsu Imai
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus with air flow bypass channel
- Patent number 6,898,049
- Issue date May 24, 2005
- Hitachi, Ltd.
- Hayato Shimizu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc unit
- Patent number 6,751,050
- Issue date Jun 15, 2004
- Hitachi, Ltd.
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic-disc unit with gap between disc and shroud
- Patent number 6,665,139
- Issue date Dec 16, 2003
- Hitachi, Ltd.
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus
- Patent number 6,600,626
- Issue date Jul 29, 2003
- Hitachi, Ltd.
- Hayato Shimizu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device
- Patent number 6,560,066
- Issue date May 6, 2003
- Hitachi, Ltd.
- Satomitsu Imai
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk drive with unique cable wiring scheme and electronic...
- Patent number 6,501,645
- Issue date Dec 31, 2002
- Hitachi, Ltd.
- Shigeyuki Hanazawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device
- Patent number 6,369,977
- Issue date Apr 9, 2002
- Hitachi, Ltd.
- Satomitsu Imai
- G11 - INFORMATION STORAGE
Information Patent Grant
Bearing assembly having compact thickness, spindle motor and actuat...
- Patent number 6,115,213
- Issue date Sep 5, 2000
- Hitachi, Ltd.
- Hiroshi Ikeda
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
PC card type magnetic disk device
- Patent number 5,862,011
- Issue date Jan 19, 1999
- Hitachi, Ltd.
- Masahiko Sega
- G11 - INFORMATION STORAGE
Information Patent Grant
Information storage device using a rotary recording medium
- Patent number 5,416,658
- Issue date May 16, 1995
- Hitachi, Ltd.
- Masahiko Sega
- G11 - INFORMATION STORAGE
Information Patent Grant
Voice coil motor with discrete flux paths
- Patent number 5,267,111
- Issue date Nov 30, 1993
- Hitachi, Ltd.
- Yuji Nishimura
- G11 - INFORMATION STORAGE
Information Patent Grant
Servo information recording method for a storage apparatus
- Patent number 5,241,435
- Issue date Aug 31, 1993
- Hitachi, Ltd.
- Shigeyoshi Saito
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
MAGNETIC DISC UNIT WITH GAP BETWEEN MAGNETIC DISC AND SHROUD
- Publication number 20080106819
- Publication date May 8, 2008
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disc unit
- Publication number 20060164754
- Publication date Jul 27, 2006
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive with elastic support member
- Publication number 20060158775
- Publication date Jul 20, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Masahiko Sega
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive with compensation against disturbance
- Publication number 20050231850
- Publication date Oct 20, 2005
- Hitachi Global Storage Technologies Netherlands B.V.
- Masahiko Sega
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus
- Publication number 20050219741
- Publication date Oct 6, 2005
- Hayato Shimizu
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk drive with mechanism to suppress vibration of wiring...
- Publication number 20050190503
- Publication date Sep 1, 2005
- Hitachi Global Storage Technologies Netherlands, B.V.
- Naoki Maeda
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk device
- Publication number 20040141254
- Publication date Jul 22, 2004
- Satomitsu Imai
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disc unit
- Publication number 20040070866
- Publication date Apr 15, 2004
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Application
Carriage arm assembly for magnetic disk drive
- Publication number 20030218833
- Publication date Nov 27, 2003
- Shin Nagahiro
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus
- Publication number 20030189785
- Publication date Oct 9, 2003
- Hayato Shimizu
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk device
- Publication number 20030058575
- Publication date Mar 27, 2003
- Satomitsu Imai
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus
- Publication number 20020181149
- Publication date Dec 5, 2002
- Hayato Shimizu
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic-disc unit
- Publication number 20020075592
- Publication date Jun 20, 2002
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk device
- Publication number 20020039253
- Publication date Apr 4, 2002
- Satomitsu Imai
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC DISK DEVICE
- Publication number 20020039251
- Publication date Apr 4, 2002
- Satomitsu Imai
- G11 - INFORMATION STORAGE

Masahiko Sega

Person

Patents Grantslast 30 patents

Magnetic disc unit with gap between magnetic disc and shroud

Magnetic disk drive with compensation against disturbance

Magnetic disk drive with elastic support member

Magnetic disk drive with mechanism to suppress vibration of wiring...

Magnetic disc unit with gap between magnetic disc and shroud

Magnetic disk apparatus with shroud and having open space downstrea...

Magnetic disc unit with range of gap between disc and shroud

Carriage arm assembly for magnetic disk drive

Magnetic disk device

Magnetic disk apparatus with air flow bypass channel

Magnetic disc unit

Magnetic-disc unit with gap between disc and shroud

Magnetic disk apparatus

Magnetic disk device

Magnetic disk drive with unique cable wiring scheme and electronic...

Magnetic disk device

Bearing assembly having compact thickness, spindle motor and actuat...

PC card type magnetic disk device

Information storage device using a rotary recording medium

Voice coil motor with discrete flux paths

Servo information recording method for a storage apparatus

Patents Applicationslast 30 patents

MAGNETIC DISC UNIT WITH GAP BETWEEN MAGNETIC DISC AND SHROUD

Magnetic disc unit

Magnetic disk drive with elastic support member

Magnetic disk drive with compensation against disturbance

Magnetic disk apparatus

Magnetic disk drive with mechanism to suppress vibration of wiring...

Magnetic disk device

Magnetic disc unit

Carriage arm assembly for magnetic disk drive

Magnetic disk apparatus

Magnetic disk device

Magnetic disk apparatus

Magnetic-disc unit

Magnetic disk device

MAGNETIC DISK DEVICE