Fumio Jooraku

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Conductive material and process for preparing the same
- Patent number 5,403,674
- Issue date Apr 4, 1995
- Hitachi, Ltd.
- Yoshiyuki Yasutomi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Conductive material and process for preparing the same
- Patent number 5,271,871
- Issue date Dec 21, 1993
- Hitachi, Ltd.
- Yoshiyuki Yasutomi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Conductive material and process for preparing the same
- Patent number 5,085,806
- Issue date Feb 4, 1992
- Hitachi, Ltd.
- Yoshiyuki Yasutomi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES