Toshiyuki Haruna

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Odawara, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rotary memory storage device with cache control method and apparatus
- Patent number 5,742,933
- Issue date Apr 21, 1998
- Hitachi, Ltd.
- Akira Kojima
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Cache control method and rotary storage device having cache control
- Patent number 5,584,012
- Issue date Dec 10, 1996
- Hitachi, Ltd.
- Akira Kojima
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Head positioning device for use in magnetic disk equipment
- Patent number 5,105,318
- Issue date Apr 14, 1992
- Hitachi, Ltd.
- Katsuhiro Tsuneta
- G11 - INFORMATION STORAGE
Information Patent Grant
Control system for brushless DC motor
- Patent number 5,012,166
- Issue date Apr 30, 1991
- Hitachi, Ltd.
- Nobuyoshi Ushijima
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording/reproducing method and apparatus of magnetic disk unit in...
- Patent number 4,803,572
- Issue date Feb 7, 1989
- Hitachi, Ltd.
- Toshiyuki Haruna
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc unit system
- Patent number 4,727,439
- Issue date Feb 23, 1988
- Hitachi, Ltd.
- Toshiyuki Haruna
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for reducing starting adhesion between a magnetic disc an...
- Patent number 4,542,429
- Issue date Sep 17, 1985
- Hitachi, Ltd.
- Hiroshi Nishida
- G11 - INFORMATION STORAGE