Yasutoshi Yagiu

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical coupling apparatus and manufacturing method of the same, an...
- Patent number 5,195,155
- Issue date Mar 16, 1993
- Hitachi, Ltd.
- Makoto Shimaoka
- G02 - OPTICS
Information Patent Grant
Semiconductor light emitting device and apparatus using the same
- Patent number 5,046,798
- Issue date Sep 10, 1991
- Hitachi, Ltd.
- Yasutoshi Yagiu
- G02 - OPTICS