Tomio Yasuda

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Hitachi, JP

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Patents Grantslast 30 patents

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Semiconductor devices of multi-emitter type
- Patent number 4,542,398
- Issue date Sep 17, 1985
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device having ribbon electrode structure and method f...
- Patent number 4,516,149
- Issue date May 7, 1985
- Hitachi, Ltd.
- Yoko Wakui
- H01 - BASIC ELECTRIC ELEMENTS