Kazutoshi Konno

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Yokosuka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Disc cassette (disc cartridge)
- Patent number RE32876
- Issue date Feb 21, 1989
- Hitachi, Ltd.
- Manabu Wakabayashi
- 360 - Dynamic magnetic information storage or retrieval
Information Patent Grant
Magnetic head for magnetic disk
- Patent number 4,613,920
- Issue date Sep 23, 1986
- Hitachi, Ltd.
- Shigemitsu Higuchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Tracking servo system for magnetic recording and reproducing appara...
- Patent number 4,551,777
- Issue date Nov 5, 1985
- Hitachi, Ltd.
- Tadashi Saito
- G11 - INFORMATION STORAGE
Information Patent Grant
Disc cassette (disc cartridge)
- Patent number 4,550,354
- Issue date Oct 29, 1985
- Hitachi, Ltd.
- Manabu Wakabayashi
- G11 - INFORMATION STORAGE