Shigekazu Minagawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hetero crystalline structure and semiconductor device using it
- Patent number 5,300,793
- Issue date Apr 5, 1994
- Hitachi, Ltd.
- Masahiko Kondow
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optoelectronic devices
- Patent number 5,157,679
- Issue date Oct 20, 1992
- Hitachi Ltd.
- Masahiko Kondow
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 4,841,531
- Issue date Jun 20, 1989
- Hitachi, Ltd.
- Masahiko Kondow
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Opto-electronic device
- Patent number 4,794,606
- Issue date Dec 27, 1988
- Hitachi, Ltd.
- Masahiko Kondow
- B82 - NANO-TECHNOLOGY