Takeshi Ohnuki

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical recording medium, optical head, and optical recording device
- Patent number 6,333,900
- Issue date Dec 25, 2001
- Hitachi Maxell, Ltd.
- Tsuyoshi Maro
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical recording medium, optical head and optical recording device
- Patent number 6,217,968
- Issue date Apr 17, 2001
- Hitachi Maxell, Ltd.
- Tsuyoshi Maro
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk cartridge and shutter opening-closing mechanism for t...
- Patent number 5,646,807
- Issue date Jul 8, 1997
- Hitachi Maxell, Inc.
- Takeshi Ohnuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head apparatus used for movable magnetic medium with head...
- Patent number 4,870,523
- Issue date Sep 26, 1989
- Hitachi Maxell, Ltd.
- Osamu Inagoya
- G11 - INFORMATION STORAGE