Atsutoshi Doi

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Ohme, JP

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor laser device
- Patent number 4,426,700
- Issue date Jan 17, 1984
- Hitachi, Ltd.
- Motohisa Hirao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device including an arrangement for preventing...
- Patent number 4,366,569
- Issue date Dec 28, 1982
- Hitachi, Ltd.
- Motohisa Hirao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 4,329,658
- Issue date May 11, 1982
- Hitachi, Ltd.
- Atsutoshi Doi
- H01 - BASIC ELECTRIC ELEMENTS