Ryoichi Ichikawa

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic head with IC thereon with recording frequency controlled a...
- Patent number 6,912,102
- Issue date Jun 28, 2005
- Hitachi, Ltd.
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device with magnetic head supporting mechanism having...
- Patent number 6,754,023
- Issue date Jun 22, 2004
- Hitachi, Ltd.
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device without slider and having magnetic head mounte...
- Patent number 5,757,573
- Issue date May 26, 1998
- Hitachi, Ltd.
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device without slider and having magnetic head mounte...
- Patent number 5,335,126
- Issue date Aug 2, 1994
- Hitachi, Ltd.
- Mikio Tokyuama
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Magnetic disk device
- Publication number 20040218303
- Publication date Nov 4, 2004
- Mikio Tokuyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk device
- Publication number 20010055175
- Publication date Dec 27, 2001
- Mikio Tokuyama
- G11 - INFORMATION STORAGE