Tsuyoshi Kato

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Hachioji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for thermo magnetic recording/erasing informat...
- Patent number 4,712,203
- Issue date Dec 8, 1987
- Hitachi, Ltd.
- Atsushi Saito
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical head with improved extinction ratio for magneto-optical memory
- Patent number 4,672,593
- Issue date Jun 9, 1987
- Hitachi, Ltd.
- Masahiro Ojima
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording system utilizing a leakage magnetic field...
- Patent number 4,672,594
- Issue date Jun 9, 1987
- Hitachi, Ltd.
- Tsuyoshi Kato
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical track position detecting apparatus and optical information...
- Patent number 4,525,826
- Issue date Jun 25, 1985
- Hitachi, Ltd.
- Shigeru Nakamura
- G11 - INFORMATION STORAGE