Takao Ketori

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Tap cartridge
- Patent number 4,660,784
- Issue date Apr 28, 1987
- Hitachi Maxell, Ltd.
- Takashi Sumida
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape cartridge with extending reference surfaces
- Patent number 4,643,304
- Issue date Feb 17, 1987
- Hitachi Maxell, Ltd.
- Takashi Sumida
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape cassette
- Patent number 4,635,879
- Issue date Jan 13, 1987
- Hitachi Maxell, Ltd.
- Takashi Sumida
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for fabrication of rear chip for hall effect magnetic head
- Patent number 4,186,481
- Issue date Feb 5, 1980
- Hitachi, Ltd.
- Takaharu Noguchi
- G11 - INFORMATION STORAGE