Nobutaka Ohnuki

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Tracking control unit in information reproducing apparatus
- Patent number 4,805,163
- Issue date Feb 14, 1989
- Hitachi, Ltd.
- Nobutaka Ohnuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for reproducing information recorded on a disk
- Patent number 4,740,939
- Issue date Apr 26, 1988
- Hitachi Ltd.
- Takashi Kimura
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of and apparatus for driving semiconductor laser
- Patent number 4,712,218
- Issue date Dec 8, 1987
- Hitachi, Ltd.
- Nobutaka Ohnuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Electro-acoustic transducer with variable thickness foam surfaced d...
- Patent number 4,163,876
- Issue date Aug 7, 1979
- Hitachi, Ltd.
- Nobutaka Ohnuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE