Yasutoshi Kurihara

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Katsuta, JA

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Patents Grantslast 30 patents

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Photo-coupler semiconductor device and method of manufacturing the...
- Patent number 4,058,821
- Issue date Nov 15, 1977
- Hitachi, Ltd.
- Tadahiko Miyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gallium arsenide infrared light emitting diode
- Patent number 4,008,485
- Issue date Feb 15, 1977
- Hitachi, Ltd.
- Tadahiko Miyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Photo coupler
- Patent number 4,001,859
- Issue date Jan 4, 1977
- Hitachi, Ltd.
- Tadahiko Miyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of producing infrared luminescent diodes
- Patent number 3,998,672
- Issue date Dec 21, 1976
- Hitachi, Ltd.
- Tadahiko Miyoshi
- H01 - BASIC ELECTRIC ELEMENTS