Akio Hayasaka

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Kodaira, JA

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Patents Grantslast 30 patents

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Method of manufacturing semiconductor devices with local oxidation...
- Patent number 4,008,107
- Issue date Feb 15, 1977
- Hitachi, Ltd.
- Akio Hayasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of fabricating semiconductor device using at least two sorts...
- Patent number 3,977,920
- Issue date Aug 31, 1976
- Hitachi, Ltd.
- Ichiro Imaizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing semiconductor device
- Patent number 3,933,540
- Issue date Jan 20, 1976
- Hitachi, Ltd.
- Hiroyuki Kondo
- H01 - BASIC ELECTRIC ELEMENTS