Hirosi Akiyama

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor device having thermal stress resistance structure
- Patent number 5,621,243
- Issue date Apr 15, 1997
- Hitachi, Ltd.
- Noboru Baba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Nuclear fusion reactor
- Patent number 4,690,793
- Issue date Sep 1, 1987
- Hitachi, Ltd.
- Hisanori Okamura
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Production method of thin film magnetic head
- Patent number 4,685,014
- Issue date Aug 4, 1987
- Computer Basic Technology Association
- Masanobu Hanazono
- G11 - INFORMATION STORAGE
Information Patent Grant
Ceramic composite article
- Patent number 4,636,434
- Issue date Jan 13, 1987
- Hitachi, Ltd.
- Hisanori Okamura
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES